U.S. GEOLOGICAL SURVEY

Water-Resources Investigations Report 00–4263

Summary of Water-Quality Data, 

October 1987 through September 1997, 

for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

By Clifford R. Bossong

Denver, Colorado

2001

Prepared in cooperation with the

COLORADO SPRINGS UTILITIES
U.S. DEPARTMENT OF THE INTERIOR

GALE A. NORTON, Secretary

U.S. GEOLOGICAL SURVEY

Charles G. Groat, Director

The use of firm, trade, and brand names in this report is for identification purposes only and does

not constitute endorsement by the U.S. Geological Survey.

For additional information write to: Copies of this report can be purchased

U.S. Geological Survey

Information Services

Box 25286

Federal Center

Denver, CO 80225

from:

District Chief

U.S. Geological Survey

Box 25046, Mail Stop 415

Denver Federal Center

Denver, CO 80225–0046
CONTENTS III

CONTENTS

Abstract.................................................................................................................................................................................. 1

Introduction............................................................................................................................................................................ 1

Purpose and Scope....................................................................................................................................................... 3

Description of the Study Area ..................................................................................................................................... 3

Water-Quality Station Characteristics and Sampling History ............................................................................................... 4

Statistical Summaries............................................................................................................................................................. 4

Methods of Presentation .............................................................................................................................................. 6

General Water-Quality Characteristics ........................................................................................................................ 18

Summary of Water-Quality Characteristics Compared to In-Stream Regulatory Standards................................................. 25

Summary of Monotonic Trends in Water Quality ................................................................................................................. 30

Methods Used to Evaluate Monotonic Trends............................................................................................................. 30

Seasons ........................................................................................................................................................................ 30

Discussion of Monotonic Trends................................................................................................................................. 32

Summary of Monotonic Trends for Regulated Water-Quality Properties and Constituents ....................................... 32

Summary................................................................................................................................................................................ 34

References.............................................................................................................................................................................. 34

Appendix................................................................................................................................................................................ 35

FIGURES

1. Map showing location of study area and sampling sites in study area............................................................... 2

2–12. Graphs showing:

2. Sampling frequency for individual stations............................................................................................. 6

3. Correlation among water-quality properties and constituents within reach 1......................................... 19

4. Correlation among water-quality properties and constituents within reach 2......................................... 20

5. Correlation among water-quality properties and constituents within reach 3......................................... 21

6. Correlation among water-quality properties and constituents within reach 4......................................... 22

7. Rank in study area (areal) and station (local) variation of water-quality properties and 

constituents from samples collected in Fountain and Monument Creeks for the period 

October 1987 through September 1992 .................................................................................................. 23

8. Rank in study area (areal) and station (local) variation of water-quality properties and 

constituents from samples collected in Fountain and Monument Creeks for the period 

October 1992 through September 1997 .................................................................................................. 24

9. Summary of in-stream regulatory standard exceedance for samples from Fountain and 

Monument Creeks for the period October 1987 through September 1992 ............................................. 26

10. Summary of in-stream regulatory standard exceedance for samples from Fountain and 

Monument Creeks for the period October 1992 through September 1997 ............................................. 27

11. Seasonal variation of water-quality properties at station 5530 ............................................................... 31

12. Summary of nonparametric monotonic trends for samples from Fountain and Monument 

Creeks for the period October 1987 through September 1997................................................................ 33

APPENDIX FIGURES

A1—A11. Correlation among log-transformed water-quality properties and constituents at:

A1. Station 3700, for the period October 1987 through September 1997 ..................................................... 37

A2. Station 3747, for the period October 1987 through September 1997 ..................................................... 38

A3. Station 3780, for the period October 1987 through September 1997 ..................................................... 39

A4. Station 4000, for the period October 1987 through September 1997 ..................................................... 40

A5. Station 4905, for the period October 1987 through September 1997 ..................................................... 41

A6. Station 5500, for the period October 1987 through September 1997 ..................................................... 42

A7. Station 5530, for the period October 1987 through September 1997 ..................................................... 43
IV CONTENTS

A8. Station 5533, for the period October 1987 through September 1997 ..................................................... 44

A9. Station 5905, for the period October 1987 through September 1997 ..................................................... 45

A10. Station 6300, for the period October 1987 through September 1997 ..................................................... 46

A11. Station 6500, for the period October 1987 through September 1997 ..................................................... 47

TABLES

1. Characteristics of water-quality sampling stations .............................................................................................. 3

2. Characteristics of standard water-quality properties and constituents................................................................. 5

3. Distribution of sample-collection times............................................................................................................... 7

4. Distribution of samples in flow-duration intervals for selected stations.............................................................. 8

5–12. Univariate statistics for water-quality data collected for:

5. Reach 1, October 1987 through September 1992 .................................................................................... 10

6. Reach 2, October 1987 through September 1992 .................................................................................... 11

7. Reach 3, October 1987 through September 1992 .................................................................................... 12

8. Reach 4, October 1987 through September 1992 .................................................................................... 13

9. Reach 1, October 1992 through September 1997 .................................................................................... 14

10. Reach 2, October 1992 through September 1997 .................................................................................... 15

11. Reach 3, October 1992 through September 1997 .................................................................................... 16

12. Reach 4, October 1992 through September 1997 .................................................................................... 17

13. Cases of in-stream regulatory standard exceedances........................................................................................... 28

14. Characteristics of seasons defined and used for trend tests ................................................................................. 32

APPENDIX TABLES

A1–A11. Univariate statistics for water-quality data collected for:

A1. Station 3700, October 1987 through September 1992 ............................................................................. 48

A2. Station 3747, October 1987 through September 1992 ............................................................................. 49

A3. Station 3780, October 1987 through September 1992 ............................................................................. 50

A4. Station 4000, October 1987 through September 1992 ............................................................................. 51

A5. Station 4905, October 1987 through September 1992 ............................................................................. 52

A6. Station 5500, October 1987 through September 1992 ............................................................................. 53

A7. Station 5530, October 1987 through September 1992 ............................................................................. 54

A8. Station 5533, October 1987 through September 1992 ............................................................................. 55

A9. Station 5905, October 1987 through September 1992 ............................................................................. 56

A10. Station 6300, October 1987 through September 1992 ............................................................................. 57

A11. Station 6500, October 1987 through September 1992 ............................................................................. 58

A12–22. Univariate statistics for water-quality data collected for:

A12. Station 3700, October 1992 through September 1997 ............................................................................. 59

A13. Station 3747, October 1992 through September 1997 ............................................................................. 60

A14. Station 3780, October 1992 through September 1997 ............................................................................. 61

A15. Station 4000, October 1992 through September 1997 ............................................................................. 62

A16. Station 4905, October 1992 through September 1997 ............................................................................. 63

A17. Station 5500, October 1992 through September 1997 ............................................................................. 64

A18. Station 5530, October 1992 through September 1997 ............................................................................. 65

A19. Station 5533, October 1992 through September 1997 ............................................................................. 66

A20. Station 5905, October 1992 through September 1997 ............................................................................. 67

A21. Station 6300, October 1992 through September 1997 ............................................................................. 68

A22. Station 6500, October 1992 through September 1997 ............................................................................. 69
CONTENTS V

CONVERSION FACTORS, VERTICAL DATUM, AND ABBREVIATIONS

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F = 1.8 (°C + 32)

Sea level: In this report “sea level” refers to the National Geodetic Vertical Datum of 1929—a geodetic datum derived from a general 

adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (μS/cm at 25°C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms per liter (μg/L).

Multiply By To obtain

Length

foot (ft) 0.3048 meter

mile 1.609 kilometer 

Area

square mile (mi2) 259 hectare 

square mile (mi2) 2.590 square kilometer (km2)

Volume

cubic foot (ft3) 0.028317 cubic meter (m3)

Flow

cubic foot per second (ft3/s) 0.02832 cubic meter per second (m3

/s)

cubic foot per second per square mile [(ft3/s)/mi2] 0.01093 cubic meter per second per square kilometer [(m3/s)/km2]
Abstract 1

Summary of Water-Quality Data, October 1987 

through September 1997, for Fountain and Monument 

Creeks, El Paso and Pueblo Counties, Colorado

By Clifford R. Bossong

Abstract

Fountain and Monument Creeks, which 

drain parts of El Paso and Pueblo Counties in 

Colorado, have been sampled systematically by 

the U.S. Geological Survey for many years to 

obtain records of water-quality properties and 

constituents; the data are stored in the National 

Water Inventory System. Statistical summaries 

of these data indicate that they have spatial and 

temporal trends. Comparison of water-quality 

data to in-stream regulatory standards, some of 

which were calculated in this report, indicate that 

some exceedances are widespread in the system 

and that some occur locally. Nonparametric tests 

to quantitatively detect monotonic trends in waterquality data indicate that many water-quality 

properties and constituents do not have significant 

monotonic trends; detected trends were mostly 

downward.

INTRODUCTION

Fountain Creek and Monument Creek (fig. 1) 

are two relatively small streams that drain large parts 

of El Paso and Pueblo Counties along Colorado’s 

Front Range urban corridor. Headwaters for the 

streams are in the Rampart Range; headwaters for 

Fountain Creek also include a small part of Teller 

County. The streams flow south and southeast, joining 

in Colorado Springs, a large and developing urban 

center about 60 miles south of Denver. From Colorado 

Springs, Fountain Creek flows south about 40 miles 

and joins the Arkansas River at Pueblo. 

Most flow in the Fountain and Monument 

Creek Basins is derived from snowmelt and runoff 

from thunderstorms; however, there are some activities 

in the basins that affect both the amount and the 

quality of water. In mountainous areas, Fountain Creek 

receives modest transbasin diversions and has reservoirs that are used for storage, flood control, and 

power generation. In urban and Front Range corridor 

areas, the streams are affected by urban development, 

flow from wastewater-treatment facilities, and agricultural practices such as diversions for irrigation. Return 

flows from irrigation also affect Fountain Creek, 

primarily in its lower reaches. 

The U.S. Geological Survey (USGS), in 

cooperation with Colorado Springs Utilities, has 

been collecting water-quality data in the Fountain 

and Monument Creek Basins since about 1975. These 

data are maintained in the USGS National Water 

Information System (NWIS) and have been used by 

local agencies in water-resource planning and management. The USGS has published two reports describing 

these data. Edelmann (1990), on the basis of 1975 

to 1983 data, presented a detailed accounting of waterquality conditions in the study area and their relation 

to stream classifications established by the Colorado 

Department of Public Health and Environment 

(CDPHE). The CDPHE is responsible for classifying 

State surface waters and for assigning in-stream waterquality standards to classified streams (Colorado 

Department of Public Health and Environment, 

1998). Ruddy (1993), on the basis of 1976 to 1988 

data, described variations and trends in water-quality 

data. 
2 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

REACH 2

REACH 1

REACH 3

REACH 4

Pinello

Ranch

Clear Well

Pikes

Peak

DOUGLAS COUNTY ELBERT COUNTY

PUEBLO COUNTY

EL PASO COUNTY

TELLER COUNTYEL PASO COUNTY

Pueblo Pueblo

Reservoir

Arkansas

River

Fountain

Pikeview

Air Force

Academy Woodland

Park

Palmer

Lake

Security

Colorado

Springs

Manitou

Springs

Pinon  ̃

Monument

G R E AT

P L A I N S

R A M PA R T

R A N G E

FOUNTAIN

CREEK

DRAINAGE BASIN BOUNDARY

0 5 10 15 MILES

0 5 10

39°

38°30'

105°

104°30'

15 KILOMETERS

Denver

Colorado

Springs

Pueblo

COLORADO

Study

area

Fountain

Rock

Creek

Creek

Monument Creek

Steele Hollow Cr

6500

6300

5533

5905

4905 5500

4000

3780

3747

3700

5530

3700

EXPLANATION

Water-quality

 sampling station

 and number

+

Pike National

Forest Boundary

Figure 1. Map showing location of study area and sampling sites in study area.
INTRODUCTION 3

Purpose and Scope

The purpose of this report is to summarize and 

describe water-quality data available from 11 stations 

on Fountain and Monument Creeks for the period 

October 1987 through September 1997 (table 1). 

The stations represent four stream reaches (table 1) 

that have been classified by the CDPHE (Colorado 

Department of Health and Environment [1998]). 

The report includes general observations concerning 

spatial and temporal trends and, for many data, 

presents summaries for two periods: October 1987 

through September 1992 and October 1992 through 

September 1997. The data were evaluated in these two 

periods because it was suspected that they may contain 

temporal trends and because the CDHPE evaluates 

standards at 5-year intervals.

Description of the Study Area

Fountain Creek originates on the flanks of Pikes 

Peak near Woodland Park at an elevation of about 

8,500 ft. From its headwaters, Fountain Creek generally flows southeast about 10 mi to its confluence with 

Monument Creek in Colorado Springs (elevation of 

about 6,050 ft). This upper reach of Fountain Creek 

corresponds to stream segment 1 in CDPHE stream 

classifications for the Fountain Creek Basin; it will be 

referred to as “reach 1” in this report. 

Monument Creek originates in the Rampart 

Range west of Monument at an elevation of about 

9,200 ft. From its headwaters, Monument Creek 

generally flows east about 6 mi to the vicinity of 

Monument (elevation of about 7,000 ft) and then 

generally flows south about 12 mi to Fountain Creek 

in Colorado Springs. This upper reach of Monument 

Creek, which includes the area from the Pike National 

Forest boundary to the confluence of Fountain and 

Monument Creeks, corresponds to segment 6 in 

CDPHE stream classifications for the Fountain Creek 

Basin, will be referred to as “reach 2” in this report.

From the confluence with Monument Creek, 

Fountain Creek generally flows south from Colorado 

Springs about 40 mi to Pueblo (elevation of about 

4,650 ft), where it joins the Arkansas River. In this 

report, this lower reach of Fountain Creek is subdivided into two reaches. The first subdivision extends 

from the confluence of Monument and Fountain 

Creeks to just upstream from the confluence of Steele 

Hollow and Fountain Creeks. This reach corresponds 

to segment 2a in CDPHE stream classifications for 

the Fountain Creek Basin; it will be referred to as 

“reach 3” in this report. The second subdivision 

extends from the confluence of Steele Hollow and 

Fountain Creeks to the confluence of Fountain Creek 

with the Arkansas River. This reach corresponds 

to segment 2b in CDPHE stream classifications for 

the Fountain Creek Basin; it will be referred to as 

“reach 4” in this report.

Reaches 1 and 2 originate in mountainous areas 

where crystalline rocks, such as granite, are predominant. As they leave the mountainous areas, both 

streams cross a narrow band of Paleozoic sedimentary 

rocks; both streams then enter an area of highland 

plains where alluvium predominates but marine sediments of Tertiary age also are present. Reaches 3 and 4 

are in the highland plains area. Crystalline rocks sometimes are sources for metallic minerals, whereas sedimentary rocks, especially marine shales, sometimes 

are sources for sodium, sulfate, and selenium. 

Table 1. Characteristics of water-quality sampling stations

[stream segements and classifications are from Colorado Department of Public Health and Environment standards

(Colorado Department of Health and Public Environment, 1998); na, not available; AC1, Aquatic life cold - 1; AW2,

aquatic life warm - 2; R2, recreation - 2; WS, water supply; A, agriculture; USGS, U.S. Geological Survey]

-------------------------------------------------------------------------------------------------------------------------

Station Contributnumber USGS ing drainused in station age area, in Reach Stream Stream

report number Station name square miles number segment classification

-------------------------------------------------------------------------------------------------------------------------

3700 07103700 Fountain Creek near Colorado Springs 103 1 1 AC1, R2, WS, A

3747 07103747 Monument Creek at Palmer Lake 25.9 2 6 AW2, R2, WS, A

3780 07103780 Monument Creek above North Gate Blvd at USAF Academy 81.7 2 6 AW2, R2, WS, A

4000 07104000 Monument Creek at Pikeview 204 2 6 AW2, R2, WS, A

4905 07104905 Monument Creek at Bijou Street, at Colorado Springs 235 2 6 AW2, R2, WS, A

5500 07105500 Fountain Creek at Colorado Springs 392 3 2a AW2, R2, WS, A

5530 07105530 Fountain Creek below Janitell Road below Colorado Springs 413 3 2a AW2, R2, WS, A

5533 07105533 Fountain Creek at Circle Drive below Colorado Springs 414 3 2a AW2, R2, WS, A

5905 07105905 Fountain Creek above Fountain Creek, below Fountain 612 3 2a AW2, R2, WS, A

6300 07106300 Fountain Creek near Pinon 849 3 2a AW2, R2, WS, A

6500 07106500 Fountain Creek at Pueblo 926 4 2b AW2, R2, WS, A

--------------------------------------------------------------------------------------------------------------------------
4 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

WATER-QUALITY STATION 

CHARACTERISTICS AND SAMPLING 

HISTORY

Characteristics of the 11 water-quality stations 

used in this report are listed in table 1, and their locations are shown in figure 1. Because all stations have 

the first four characters of their USGS station numbers 

(0710) in common, the stations will be referred to by 

the last four characters of their station number. The 

station numbers increase in downstream order; that is 

to say, station 3780 is downstream from station 3747. 

Reach 1 includes one station in the upper Fountain 

Creek Basin: station 3700. Reach 2 includes four 

stations in the Monument Creek Basin: stations 3747, 

3780, 4000, and 4905. Reach 3 includes five stations 

in the lower Fountain Creek Basin: stations 5500, 

5530, 5533, 5905, and 6300. Reach 4 contains the 

final station in the lower Fountain Creek Basin, 

station 6500.

The stations used for analysis in this report 

have been sampled systematically for many years. In 

general, all stations were sampled for the list of waterquality properties and constituents listed in table 2 

at monthly intervals during the period addressed by 

this report. A list of standard water-quality properties 

and constituents addressed by this report is given in 

table 2. Concentrations for un-ionized ammonia were 

calculated according to methods described by USEPA 

(U.S. Environmental Protection Agency, 1987). 

Table 2 also includes names, abbreviations, reporting 

units, and in-stream regulatory standards. Additional 

details regarding in-stream regulatory standards 

are provided in the “Summary of Water-Quality 

Characteristics Compared to In-Stream Regulatory 

Criteria” section.

Sampling frequency through time for each 

station is shown in figure 2. Some variation in 

sampling frequency can be observed. These variations 

typically involve cases where, for instance, a given 

station may have been sampled twice or more in 

1 month, or may not have been sampled in another 

month, or both. In addition, some samples included 

analyses for only some of the water-quality properties 

and constituents listed in table 2 and were collected 

at an interval that was not monthly or even regular. 

In order to exclude samples with results for just a 

few water-quality properties and constituents, only 

samples that included results for a list of critical 

constituents were included in this analysis. 

The distribution of sample collection time 

throughout a day is summarized for each station in 

table 3. Because nearly all samples at all stations were 

collected between the hours of 0700 and 1600 (or 

7 a.m. and 4 p.m.), the data may not describe diurnal 

patterns in stream conditions (table 3). 

The distribution of samples used above for 

different rates of flow also is characterized with a 

flow-duration analysis for stations with records of 

about 5 or more years of record of daily flow. The 

flow-duration analysis identifies 20 intervals defined 

by duration levels, where a duration level indicates 

a percentage of time that the associated flow was 

exceeded. The 0 to 5 percent interval, for instance, 

defines the range of flows that were exceeded for 0 

to 5 percent of the period of record analyzed; for this 

analysis, the 0 percentile was assigned the maximum 

flow associated with a water-quality sample for the 

study period at a given station. For example, at 

station 3700, table 4 indicates that 0 percent of 

samples in period 1 were collected in the 0 to less 

than 5 duration interval; however, 6.78 percent of 

samples from period 2 were collected in the same 

(0 to less than 5) interval. If sample collection were 

evenly distributed among the 20 duration intervals, 

then the percentage of all samples collected in each 

interval would be 5 percent. 

The number of samples collected in each of 

the defined intervals is tabulated for the two periods 

evaluated in this report. A third period (beginning in 

October 1982 and continuing through September 1997 

[table 4]) also was included in the flow-duration analysis to indicate results for a long-term period. The 

results indicate that, in the long term (third period), 

all of the identified intervals are represented; that is, 

samples were collected in all 20 duration intervals. 

For shorter periods of time, most, but sometimes 

not all, duration intervals are represented. 

STATISTICAL SUMMARIES

Statistical summaries of water-quality data 

prepared for this report consist of tables listing 

univariate statistics, figures describing correlation 

among water-quality properties and constituents, 

and figures depicting the spatial and local variations 

for measurements of water-quality properties and 

constituents. This information is provided for the 
S

TATISTICALSUMMARIES5

Table 2. Characteristics of standard water-quality properties and constituents

[INST., instantaneous; WH, whole water; CONDF, field specific conductance; CONDL, lab specific conductance; DIS., dissolved; DEG, degreNO2, nitrite; NO3, nitrate; TOT, total; S, suspended; SED, sediment; CFS, cubic feet per second; US/CM, microsiemens per centimeter; MGliter; %, percent; SAT, saturation; COLS, colonies; ML, milliliter; range, 6.5 to 9.0; *, drinking water-supply standard; na, not appliStandard listed for NO2 + N03 (nitrite + nitrate) is for nitrateUnless otherwise noted, listed standards are for the aquatic life classification; in cases with multiple classifications the most strinlisted (stream clasifications listed in table 1). The listed in-stream aquatic-life standards for most constituents are fixed values folevels established by Colorado Department of Public Health and Environment (CDPHE, 1999). In-stream aquatic life standards for some metcadmium, chromium, copper, lead, nickel, silver, and zinc) were calculated according to equations developed by the Colorado Department Health and Environment (CDHPE, 1999) using 85th percentile values for hardness as CaCO3 for the period October 1992 through September 1station 6500 for which the 85th percentile hardness value was determined using data from October 1987 through September 1997; The point the dissolved manganese standard in reach 3 is near Security at the Pinello Ranch Clear Well (location shown on figure 1]

---------------------------------------------------------------------------------------------------------------------------------------------

Abbreviation In-stream regulatory standard for individual stations

Property or used in this Reporting Parameter --------------------------------------------------------------------------------constituent report units code 3700 3747 3780 4000 4905 5500 5530 5533 5905 ---------------------------------------------------------------------------------------------------------------------------------------------DISCHARGE, INST. CFS CFS 00061 na na na na na na na na na SPECIFIC CONDUCTANCE CONDF US/CM @ 25C 00095 na na na na na na na na na SPECIFIC CONDUCTANCE CONDL US/CM @ 25C 90095 na na na na na na na na na PH, WH, FIELD PH STANDARD UNITS 00400 range range range range range range range range range WATER TEMPERATURE TEMP DEGREES 00010 20.0 na na na na na na na na OXYGEN DISSOLVED DO MG/L 00300 7.00 6.00 6.00 6.00 6.00 5.00 5.00 5.00 5.00 OXYGEN DIS. PERCENT %DO % OF SAT 00301 na na na na na na na na na BOD 5-DAY AT 20 DEG BOD5 MG/L 00310 na na na na na na na na na COLIFORM FECAL 0.7 FCOL COLS./100 ML 31625 200 200 200 200 200 2000 2000 2000 2000 FECAL STRPT KF AGAR FSTRP COLS./100 ML 31673 na na na na na na na na na CALCIUM DISSOLVED CA MG/L AS CA 00915 na na na na na na na na na MAGNESIUM DISSOLVED MG MG/L AS MG 00925 na na na na na na na na na ALKALINITY ALK MG/L AS CACO3 90410 na na na na na na na na na SULFATE DISSOLVED SO4 MG/L AS SO4 00945 250 250 250 250 250 330 330 330 330 CHLORIDE DISSOLVED CL MG/L AS CL 00940 250 250 250 250 250 250 250 250 250 FLUORIDE DISSOLVED F MG/L AS F 00950 2.00* 2.00* 2.00* 2.00* 2.00* 2.00* 2.00* 2.00* 2.00* HARDNESS TOTAL HARD MG/L AS CAO3 00900 na na na na na na na na na RESIDUE TOTAL RES MG/L 00530 na na na na na na na na na NITROGEN AMMONIA D. TNH3 MG/L AS N 00608 na na na na na na na na na UN-IONIZED AMMONIA NH3- MG/L AS NH3 99999 0.02 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 NO2 + NO3 DISSOLVED NO23 MG/L AS N 00631 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 NITROGEN,NITRITE D. NIT MG/L AS N 00613 0.05 0.50 0.50 0.50 0.50 1.00 1.00 1.00 1.00 NITROGEN AMM+ORG TOT TNIT MG/L AS N 00625 na na na na na na na na na PHOSPHORUS ORTHO D. OPO4 MG/L AS P 00671 na na na na na na na na na ARSENIC DISSOLVED AS D UG/L AS AS 01000 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* ARSENIC TOTAL AS T UG/L AS AS 01002 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0 BARIUM DISSOLVED BA D UG/L AS BA 01005 na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 01007 na na na na na na na na na BORON DISSOLVED B D UG/L AS B 01020 750 750 750 750 750 750 750 750 750 BORON TOTAL B T UG/L AS B 01022 na na na na na na na na na CADMIUM DISSOLVED CD D UG/L AS CD 01025 5.00* 3.09 3.75 5.00* 5.00* 5.00* 5.00* 5.00* 5.00* CADMIUM TOTAL CD T UG/L AS CD 01027 na na na na na na na na na CHROMIUM DISSOLVED CR D UG/L AS CR 01030 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* 50.0* CHROMIUM HEXAVALENT CR6 UG/L AS CR 01032 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 CHROMIUM TOTAL CR T UG/L AS CR 01034 na na na na na na na na na COPPER DISSOLVED CU D UG/L AS CU 01040 15.8 9.88 11.4 20.4 29.4 27.6 23.1 23.1 31.9 COPPER TOTAL CU T UG/L AS CU 01042 na na na na na na na na na IRON DISSOLVED FE D UG/L AS FE 01046 300 300 300 300 300 300 300 300 300 IRON TOTAL FE T UG/L AS FE 01045 1000 1000 1000 1000 1000 8000 8000 8000 8000 LEAD DISSOLVED PB D UG/L AS PB 01049 6.27 2.89 3.672 9.66 17.6 15.9 11.9 11.9 20.2 LEAD TOTAL PB T UG/L AS PB 01051 na na na na na na na na na MANGANESE DISSOLVED MN D UG/L AS MN 01056 50.0 71.0 71.0 71.0 71.0 50.0 50.0 50.0 50.0 MANGANESE TOTAL MD T UG/L AS MN 01055 na na na na na na na na na MERCURY DISSOLVED HG D UG/L AS HG 71890 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 MERCURY, TOT.REC. HG T UG/L AS HG 71900 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 MOLYBDENUM DISSOLVED MO D UG/L AS MO 01060 na na na na na na na na na MOLYBDENUM TOTAL MO T UG/L AS MO 01062 na na na na na na na na na NICKEL DISSOLVED NI D UG/L AS NI 01065 100* 81.4 92.7 100* 100* 100* 100* 100* 100* NICKEL TOTAL NI T UG/L AS NI 01067 na na na na na na na na na SILVER DISSOLVED AG D UG/L AS AG 01075 0.13 0.05 0.07 0.23 0.47 0.41 0.29 0.29 0.56 SILVER TOTAL AG T UG/L AS AG 01077 na na na na na na na na na SELENIUM DISSOLVED SE D UG/L AS SE 01145 5.00 5.00 5.00 5.00 5.00 6.00 6.00 6.00 6.00 SELENIUM TOTAL SE T UG/L AS SE 01147 na na na na na na na na na ZINC DISSOLVED ZN D UG/L AS ZN 01090 140.96 88.7 102 183 261 246 207 207 284 ZINC TOTAL ZN T UG/L AS ZN 01092 na na na na na na na na na SULFIDE TOTAL SLF MG/L AS S 00745 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 CYANIDE TOTAL CYN MG/L AS CN 00720 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 0.005 CONCENTRATION,S.SED. SSED MG/L 80154 na na na na na na na na na SED-SUSP-SIEVE-.062 SIEV % 70331 na na na na na na na na na ---------------------------------------------------------------------------------------------------------------------------------------------
6 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

four identified reaches and for each evaluation period, 

except for correlation information, which is derived 

from October 1987 through September 1997 data. 

Tables of univariate statistics and figures depicting 

correlation for each station have been included in the 

Appendix because they provide considerably more 

detail than the summary figures and tables in the text 

and will be useful to readers that desire specific information for particular stations.

Methods of Presentation

Tables of univariate statistics for each reach and 

period (tables 5–12) include information describing 

the number of samples collected for each water-quality 

property or constituent, the percentage of samples 

reported as less than the method reporting limit 

(referred to as “censored”), univariate statistics for 

results reported as greater than method reporting 

limits, and the mean and median method reporting 

limits for censored values. The difference between the 

mean and median reporting limits is an indication of 

the variability in reporting limits for a given constituent. For example, table 5 lists that, for dissolved 

copper, the mean reporting limit is 2.50 micrograms per liter while the median reporting limit is 

1.00 microgram per liter, indicating that there are 

some relatively high value reporting limits present. 

Some reasons that differences in method reporting 

limits can occur are changes in equipment performance and analytical methodologies, and dilutions 

affected as part of analytical procedures. The data 

used in this study were collected in a systematic 

fashion, were analyzed at the USGS National WaterQuality Laboratory, and typically have only a small 

amount of variation in reporting limits for individual 

water-quality properties or constituents. 

The following univariate statistics were 

computed for all values reported as greater than 

the method reporting limit: mean, median, geometric 

mean, 15th and 85th percentiles, standard deviation, 

minimum, and maximum. Similar tables in the 

Appendix, for each station, include an in-stream 

standard, which also is given in table 2.

Figure 2. Sampling frequency for individual stations (+ indicates sample).
STATISTICAL SUMMARIES 7

Table 3. Distribution of sample-collection times

[Hours interval, interval of time, in military hours, for which frequency is reported; PCT, percent

of samples in hours interval]

---------------------------------------------------------------------------------------------------------------

Percentage of samples collected in hours interval for indicated station

----------------------------------------------------------------------------------------------

Hours interval 3700 3747 3780 4000 4905 5550 5530 5533 5905 6300 6500

---------------------------------------------------------------------------------------------------------------

0000 - 0100 0.4 0.0 0.0 0.2 0.0 0.1 0.0 0.0 0.4 0.4 0.2

0100 - 0200 0.0 0.0 0.0 0.2 0.0 0.4 0.0 0.0 1.1 0.0 0.0

0200 - 0300 0.0 0.0 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.2

0300 - 0400 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0

0400 - 0500 0.2 0.0 0.0 0.2 0.0 0.1 0.0 0.0 0.7 0.0 0.2

0500 - 0600 0.2 0.0 0.0 0.2 0.0 0.6 0.0 0.0 0.7 0.2 0.0

0600 - 0700 0.5 0.3 0.6 0.2 0.0 0.0 0.0 0.0 0.4 0.0 0.2

0700 - 0800 4.7 4.2 2.2 0.6 0.0 0.3 0.0 1.0 3.9 0.7 1.4

0800 - 0900 7.5 16.0 3.2 1.9 2.8 2.9 0.4 5.2 7.7 1.9 3.3

0900 - 1000 10.9 24.1 8.3 6.6 3.3 10.9 4.8 6.3 15.0 7.5 6.1

1000 - 1100 12.9 20.5 17.5 12.2 8.5 16.8 19.0 1.1 8.4 12.5 8.0

1100 - 1200 13.8 11.2 26.7 9.7 9.4 17.5 18.1 0.0 12.6 15.2 11.1

1200 - 1300 13.2 8.1 19.4 14.9 10.8 15.0 24.2 7.4 12.6 16.1 9.9

1300 - 1400 11.8 5.4 8.3 21.7 9.0 12.1 16.1 24.2 11.9 14.2 16.0

1400 - 1500 8.4 5.4 6.0 16.6 25.0 10.5 8.1 34.7 8.8 14.6 16.5

1500 - 1600 6.6 2.4 5.1 9.1 21.2 5.9 5.6 18.9 8.1 9.4 12.5

1600 - 1700 6.6 1.5 0.3 4.1 8.0 3.1 3.2 1.1 4.2 3.4 9.6

1700 - 1800 1.0 0.3 0.3 1.2 1.9 1.2 0.4 0.0 1.8 1.1 2.6

1800 - 1900 0.5 0.6 0.6 0.0 0.0 0.6 0.0 0.0 0.4 0.9 0.9

1900 - 2000 0.4 0.0 0.3 0.2 0.0 0.6 0.0 0.0 0.0 0.0 0.5

2000 - 2100 0.2 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.7 0.2 0.5

2100 - 2200 0.2 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.7 0.6 0.0

2200 - 2300 0.0 0.0 0.6 0.4 0.0 0.1 0.0 0.0 0.0 0.4 0.0

2300 - 2400 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.2

------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -------

Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0

---------------------------------------------------------------------------------------------------------------
8 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table 4. Distribution of samples in flow-duration intervals for selected stations

[Duration interval, gives the percentile bounds to the duration interval; P, period for analysis (period 1 is

October 1987 through September 1992, period 2 is October 1992 through September 1997, and period 3 is October

1982 through September 1997); POR, period of record used to derive duration; CDA, contributing drainage area

in square miles; CFS, flow in cubic feet per second for the upper bound of the duration interval; CFSM, flow

in cubic feet per second per square mile for the upper bound of the duration interval; N, number of samples;

PCT, percent of total samples that were collected in duration interval for given period]

---------------------------------------------------------------------------------------------------------------------------

Station 3700 Station 3747 Station 3780 Station 4000

-------------------------- --------------------------- -------------------------- -------------------------

POR 1982-1997 CDA 103.0 POR 1982-1989 CDA 25.90 POR 1986-1997 CDA 81.7 POR 1983-1987 CDA 204.0

Duration -------------------------- --------------------------- -------------------------- -------------------------

interval P CFS CFSM N PCT CFS CFSM N PCT CFS CFSM N PCT CFS CFSM N PCT

---------------------------------------------------------------------------------------------------------------------------

0 - <5 1 518 5.03 0 0.00 168 6.49 1 1.64 261 3.19 3 4.84 410 2.01 0 0.00

0 - <5 2 518 5.03 4 6.78 168 6.49 1 1.72 261 3.19 2 3.39 410 2.01 1 1.69

0 - <5 3 518 5.03 7 3.65 168 6.49 4 2.44 261 3.19 13 7.88 410 2.01 4 2.11

5 - <10 1 66 0.64 0 0.00 38.1 1.47 1 1.64 39.9 0.49 3 4.84 149 0.73 2 3.23

5 - <10 2 66 0.64 4 6.78 38.1 1.47 0 0.00 39.9 0.49 7 11.86 149 0.73 0 0.00

5 - <10 3 66 0.64 9 4.69 38.1 1.47 4 2.44 39.9 0.49 12 7.27 149 0.73 5 2.63

10 - <15 1 38.1 0.37 1 1.56 20.9 0.81 1 1.64 25.2 0.31 3 4.84 109 0.54 0 0.00

10 - <15 2 38.1 0.37 4 6.78 20.9 0.81 3 5.17 25.2 0.31 3 5.08 109 0.54 3 5.08

10 - <15 3 38.1 0.37 11 5.73 20.9 0.81 8 4.88 25.2 0.31 10 6.06 109 0.54 6 3.16

15 - <20 1 28.6 0.28 2 3.12 13.9 0.54 3 4.92 18.0 0.22 5 8.06 81.5 0.40 2 3.23

15 - <20 2 28.6 0.28 2 3.39 13.9 0.54 2 3.45 18.0 0.22 6 10.17 81.5 0.40 1 1.69

15 - <20 3 28.6 0.28 10 5.21 13.9 0.54 8 4.88 18.0 0.22 18 10.91 81.5 0.40 7 3.68

20 - <25 1 22.6 0.22 0 0.00 9.96 0.38 0 0.00 14.4 0.18 1 1.61 67.4 0.33 0 0.00

20 - <25 2 22.6 0.22 1 1.69 9.96 0.38 5 8.62 14.4 0.18 1 1.69 67.4 0.33 3 5.08

20 - <25 3 22.6 0.22 5 2.60 9.96 0.38 8 4.88 14.4 0.18 5 3.03 67.4 0.33 7 3.68

25 - <30 1 19.4 0.19 2 3.12 7.49 0.29 2 3.28 11.3 0.14 3 4.84 57.6 0.28 0 0.00

25 - <30 2 19.4 0.19 4 6.78 7.49 0.29 2 3.45 11.3 0.14 3 5.08 57.6 0.28 1 1.69

25 - <30 3 19.4 0.19 10 5.21 7.49 0.29 9 5.49 11.3 0.14 9 5.45 57.6 0.28 2 1.05

30 - <35 1 17.3 0.17 3 4.69 5.64 0.22 2 3.28 9.11 0.11 1 1.61 49.3 0.24 1 1.61

30 - <35 2 17.3 0.17 2 3.39 5.64 0.22 1 1.72 9.11 0.11 4 6.78 49.3 0.24 0 0.00

30 - <35 3 17.3 0.17 9 4.69 5.64 0.22 5 3.05 9.11 0.11 8 4.85 49.3 0.24 4 2.11

35 - <40 1 15.8 0.15 3 4.69 4.60 0.18 1 1.64 7.65 0.09 3 4.84 42.0 0.21 3 4.84

35 - <40 2 15.8 0.15 3 5.08 4.60 0.18 2 3.45 7.65 0.09 2 3.39 42.0 0.21 5 8.47

35 - <40 3 15.8 0.15 8 4.17 4.60 0.18 4 2.44 7.65 0.09 7 4.24 42.0 0.21 11 5.79

40 - <45 1 14.3 0.14 2 3.12 3.89 0.15 2 3.28 6.59 0.08 2 3.23 36.3 0.18 2 3.23

40 - <45 2 14.3 0.14 2 3.39 3.89 0.15 1 1.72 6.59 0.08 1 1.69 36.3 0.18 2 3.39

40 - <45 3 14.3 0.14 11 5.73 3.89 0.15 5 3.05 6.59 0.08 3 1.82 36.3 0.18 8 4.21

45 - <50 1 13.1 0.13 2 3.12 3.20 0.12 3 4.92 5.91 0.07 3 4.84 33.2 0.16 5 8.06

45 - <50 2 13.1 0.13 2 3.39 3.20 0.12 0 0.00 5.91 0.07 4 6.78 33.2 0.16 3 5.08

45 - <50 3 13.1 0.13 8 4.17 3.20 0.12 5 3.05 5.91 0.07 7 4.24 33.2 0.16 12 6.32

50 - <55 1 12.0 0.12 5 7.81 2.80 0.11 0 0.00 5.33 0.07 3 4.84 30.1 0.15 7 11.29

50 - <55 2 12.0 0.12 4 6.78 2.80 0.11 3 5.17 5.33 0.07 1 1.69 30.1 0.15 5 8.47

50 - <55 3 12.0 0.12 13 6.77 2.80 0.11 7 4.27 5.33 0.07 6 3.64 30.1 0.15 13 6.84

55 - <60 1 11.1 0.11 1 1.56 2.41 0.09 6 9.84 4.85 0.06 6 9.68 27.4 0.13 4 6.45

55 - <60 2 11.1 0.11 2 3.39 2.41 0.09 3 5.17 4.85 0.06 10 16.95 27.4 0.13 5 8.47

55 - <60 3 11.1 0.11 10 5.21 2.41 0.09 10 6.10 4.85 0.06 19 11.52 27.4 0.13 11 5.79

60 - <65 1 10.1 0.10 7 10.94 2.07 0.08 2 3.28 3.42 0.04 0 0.00 24.8 0.12 2 3.23

60 - <65 2 10.1 0.10 6 10.17 2.07 0.08 1 1.72 3.42 0.04 0 0.00 24.8 0.12 1 1.69

60 - <65 3 10.1 0.10 21 10.94 2.07 0.08 6 3.66 3.42 0.04 0 0.00 24.8 0.12 5 2.63

65 - <70 1 9.52 0.09 5 7.81 1.78 0.07 3 4.92 4.02 0.05 2 3.23 22.9 0.11 0 0.00

65 - <70 2 9.52 0.09 4 6.78 1.78 0.07 0 0.00 4.02 0.05 2 3.39 22.9 0.11 1 1.69

65 - <70 3 9.52 0.09 9 4.69 1.78 0.07 4 2.44 4.02 0.05 4 2.42 22.9 0.11 6 3.16

70 - <75 1 9.01 0.09 1 1.56 1.53 0.06 4 6.56 3.58 0.04 3 4.84 21.0 0.10 2 3.23

70 - <75 2 9.01 0.09 2 3.39 1.53 0.06 2 3.45 3.58 0.04 8 13.56 21.0 0.10 2 3.39

70 - <75 3 9.01 0.09 4 2.08 1.53 0.06 7 4.27 3.58 0.04 11 6.67 21.0 0.10 6 3.16

75 - <80 1 8.51 0.08 4 6.25 1.34 0.05 0 0.00 3.12 0.04 5 8.06 19.3 0.09 9 14.52

75 - <80 2 8.51 0.08 1 1.69 1.34 0.05 2 3.45 3.12 0.04 4 6.78 19.3 0.09 5 8.47

75 - <80 3 8.51 0.08 6 3.12 1.34 0.05 4 2.44 3.12 0.04 11 6.67 19.3 0.09 18 9.47

80 - <85 1 7.87 0.08 7 10.94 1.16 0.04 2 3.28 2.64 0.03 3 4.84 17.8 0.09 0 0.00

80 - <85 2 7.87 0.08 1 1.69 1.16 0.04 5 8.62 2.64 0.03 1 1.69 17.8 0.09 2 3.39

80 - <85 3 7.87 0.08 11 5.73 1.16 0.04 9 5.49 2.64 0.03 6 3.64 17.8 0.09 7 3.68

85 - <90 1 7.21 0.07 4 6.25 0.99 0.04 5 8.20 2.26 0.03 2 3.23 16.4 0.08 2 3.23

85 - <90 2 7.21 0.07 7 11.86 0.99 0.04 4 6.90 2.26 0.03 1 1.69 16.4 0.08 3 5.08

85 - <90 3 7.21 0.07 11 5.73 0.99 0.04 10 6.10 2.26 0.03 3 1.82 16.4 0.08 8 4.21

90 - <95 1 6.35 0.06 8 12.50 0.83 0.03 8 13.11 1.90 0.02 6 9.68 15.0 0.07 8 12.90

90 - <95 2 6.35 0.06 1 1.69 0.83 0.03 10 17.24 1.90 0.02 3 5.08 15.0 0.07 7 11.86

90 - <95 3 6.35 0.06 9 4.69 0.83 0.03 21 12.80 1.90 0.02 11 6.67 15.0 0.07 19 10.00

95 - 100 1 5.38 0.05 7 10.94 0.52 0.02 15 24.59 1.40 0.02 8 12.90 13.1 0.06 13 20.97

95 - 100 2 5.38 0.05 3 5.08 0.52 0.02 11 18.97 1.40 0.02 1 1.69 13.1 0.06 9 15.25

95 - 100 3 5.38 0.05 10 5.21 0.52 0.02 26 15.85 1.40 0.02 10 6.06 13.1 0.06 31 16.32
STATISTICAL SUMMARIES 9

Table 4. Distribution of samples in flow-duration intervals for selected stations--continued

[Duration interval, gives the percentile bounds to the duration interval; P, period for analysis (period 1 is

October 1987 through September 1992, period 2 is October 1992 through September 1997, and period 3 is October

1982 through September 1997); POR, period of record used to derive duration; CDA, contributing drainage area

in square miles; CFS, flow in cubic feet per second for the upper bound of the duration interval; CFSM, flow

in cubic feet per second per square mile for the upper bound of the duration interval; N, number of samples;

PCT, percent of total samples that were collected in duration interval for given period]

------------------------------------------------------------------------------------------------------------------

Station 5500 Station 6300 Station 6500

-------------------------- -------------------------- --------------------------

POR 1983-1987 CDA 392.0 POR 1982-1997 CDA 849.0 POR 1982-1997 CDA 926.0

Duration -------------------------- -------------------------- --------------------------

interval P CFS CFSM N PCT CFS CFSM N PCT CFS CFSM N PCT

------------------------------------------------------------------------------------------------

0 - <5 1 2170 5.54 0 0.00 5750 6.77 0 0.00 1040 1.12 0 0.00

0 - <5 2 2170 5.54 2 3.39 5750 6.77 1 5.00 1040 1.12 4 6.56

0 - <5 3 2170 5.54 2 1.05 5750 6.77 2 3.70 1040 1.12 9 4.25

5 - <10 1 327 0.83 0 0.00 396 0.47 0 0.00 434 0.47 2 2.44

5 - <10 2 327 0.83 3 5.08 396 0.47 1 5.00 434 0.47 3 4.92

5 - <10 3 327 0.83 6 3.16 396 0.47 3 5.56 434 0.47 11 5.19

10 - <15 1 233 0.59 1 1.67 257 0.30 0 0.00 272 0.29 2 2.44

10 - <15 2 233 0.59 0 0.00 257 0.30 0 0.00 272 0.29 3 4.92

10 - <15 3 233 0.59 6 3.16 257 0.30 0 0.00 272 0.29 8 3.77

15 - <20 1 178 0.45 0 0.00 205 0.24 0 0.00 214 0.23 2 2.44

15 - <20 2 178 0.45 4 6.78 205 0.24 1 5.00 214 0.23 2 3.28

15 - <20 3 178 0.45 6 3.16 205 0.24 3 5.56 214 0.23 11 5.19

20 - <25 1 134 0.34 0 0.00 170 0.20 1 12.50 181 0.20 1 1.22

20 - <25 2 134 0.34 0 0.00 170 0.20 1 5.00 181 0.20 4 6.56

20 - <25 3 134 0.34 6 3.16 170 0.20 3 5.56 181 0.20 8 3.77

25 - <30 1 104 0.27 4 6.67 157 0.18 1 12.50 168 0.18 2 2.44

25 - <30 2 104 0.27 3 5.08 157 0.18 2 10.00 168 0.18 1 1.64

25 - <30 3 104 0.27 10 5.26 157 0.18 4 7.41 168 0.18 6 2.83

30 - <35 1 86.6 0.22 2 3.33 143 0.17 0 0.00 155 0.17 3 3.66

30 - <35 2 86.6 0.22 0 0.00 143 0.17 1 5.00 155 0.17 6 9.84

30 - <35 3 86.6 0.22 8 4.21 143 0.17 2 3.70 155 0.17 12 5.66

35 - <40 1 74.0 0.19 4 6.67 130 0.15 1 12.50 142 0.15 5 6.10

35 - <40 2 74.0 0.19 1 1.69 130 0.15 2 10.00 142 0.15 6 9.84

35 - <40 3 74.0 0.19 10 5.26 130 0.15 5 9.26 142 0.15 14 6.60

40 - <45 1 63.4 0.16 1 1.67 118 0.14 0 0.00 129 0.14 3 3.66

40 - <45 2 63.4 0.16 5 8.47 118 0.14 2 10.00 129 0.14 3 4.92

40 - <45 3 63.4 0.16 11 5.79 118 0.14 5 9.26 129 0.14 11 5.19

45 - <50 1 55.7 0.14 5 8.33 110 0.13 1 12.50 119 0.13 6 7.32

45 - <50 2 55.7 0.14 4 6.78 110 0.13 0 0.00 119 0.13 5 8.20

45 - <50 3 55.7 0.14 11 5.79 110 0.13 5 9.26 119 0.13 11 5.19

50 - <55 1 50.4 0.13 3 5.00 102 0.12 2 25.00 111 0.12 1 1.22

50 - <55 2 50.4 0.13 3 5.08 102 0.12 2 10.00 111 0.12 2 3.28

50 - <55 3 50.4 0.13 8 4.21 102 0.12 5 9.26 111 0.12 7 3.30

55 - <60 1 45.9 0.12 0 0.00 93.8 0.11 0 0.00 102 0.11 6 7.32

55 - <60 2 45.9 0.12 2 3.39 93.8 0.11 0 0.00 102 0.11 4 6.56

55 - <60 3 45.9 0.12 5 2.63 93.8 0.11 2 3.70 102 0.11 12 5.66

60 - <65 1 41.9 0.11 0 0.00 85.8 0.10 0 0.00 92.6 0.10 6 7.32

60 - <65 2 41.9 0.11 3 5.08 85.8 0.10 2 10.00 92.6 0.10 1 1.64

60 - <65 3 41.9 0.11 8 4.21 85.8 0.10 4 7.41 92.6 0.10 13 6.13

65 - <70 1 38.3 0.10 4 6.67 77.3 0.09 0 0.00 83.6 0.09 7 8.54

65 - <70 2 38.3 0.10 1 1.69 77.3 0.09 0 0.00 83.6 0.09 2 3.28

65 - <70 3 38.3 0.10 7 3.68 77.3 0.09 0 0.00 83.6 0.09 12 5.66

70 - <75 1 35.6 0.09 5 8.33 67.3 0.08 0 0.00 74.2 0.08 8 9.76

70 - <75 2 35.6 0.09 2 3.39 67.3 0.08 2 10.00 74.2 0.08 2 3.28

70 - <75 3 35.6 0.09 10 5.26 67.3 0.08 2 3.70 74.2 0.08 11 5.19

75 - <80 1 33.3 0.08 2 3.33 57.3 0.07 0 0.00 64.9 0.07 4 4.88

75 - <80 2 33.3 0.08 3 5.08 57.3 0.07 2 10.00 64.9 0.07 2 3.28

75 - <80 3 33.3 0.08 8 4.21 57.3 0.07 2 3.70 64.9 0.07 9 4.25

80 - <85 1 31.2 0.08 3 5.00 46.2 0.05 2 25.00 54.3 0.06 6 7.32

80 - <85 2 31.2 0.08 3 5.08 46.2 0.05 1 5.00 54.3 0.06 2 3.28

80 - <85 3 31.2 0.08 8 4.21 46.2 0.05 4 7.41 54.3 0.06 13 6.13

85 - <90 1 29.1 0.07 3 5.00 35.0 0.04 0 0.00 40.3 0.04 6 7.32

85 - <90 2 29.1 0.07 2 3.39 35.0 0.04 0 0.00 40.3 0.04 3 4.92

85 - <90 3 29.1 0.07 10 5.26 35.0 0.04 1 1.85 40.3 0.04 11 5.19

90 - <95 1 26.2 0.07 4 6.67 25.5 0.03 0 0.00 28.8 0.03 7 8.54

90 - <95 2 26.2 0.07 8 13.56 25.5 0.03 0 0.00 28.8 0.03 5 8.20

90 - <95 3 26.2 0.07 15 7.89 25.5 0.03 1 1.85 28.8 0.03 13 6.13

95 - 100 1 22.5 0.06 19 31.67 14.7 0.02 0 0.00 16.4 0.02 5 6.10

95 - 100 2 22.5 0.06 10 16.95 14.7 0.02 0 0.00 16.4 0.02 1 1.64

95 - 100 3 22.5 0.06 35 18.42 14.7 0.02 1 1.85 16.4 0.02 10 4.72

-------------------------------------------------------------------------------------------------------------------
10 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks,

El Paso and Pueblo Counties, Colorado

Table 5. Univariate statistics for water-quality data collected for reach 1, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 144 na 13.5 9.45 10.7 13.6 6.08 19.0 2.60 87.0 na SPECIFIC COND. CONDF US/CM @ 25C 121 na 335 329 322 94.7 232 443 176 649 na SPECIFIC COND. CONDL MICROSIEMENS/C 66 na 347 335 335 91.8 242 435 172 604 na PH, WH, FIELD PH STANDARD UNITS 67 na 8.27 8.30 8.27 0.17 8.10 8.40 7.90 9.00 na WATER TEMP. TEMP DEGREES 123 na 8.43 8.50 na 5.48 1.80 15.0 0 22.0 na OXYGEN DISS. DO MG/L 67 na 9.54 9.40 9.44 1.39 7.90 11.3 7.10 11.9 na OXYGEN DIS. % %DO % OF SATURATION 65 na 98.5 98.0 98.4 2.91 96.0 101 91.0 106 na BOD 5-DAY BOD5 MG/L 58 3.45 1.11 0.90 0.85 0.97 0.40 1.69 0.10 5.70 COLIFORM FECAL FCOL COLS./100 ML 61 4.92 1100 365 222 1990 16.0 2250 2.00 9300 4FECAL STRPT FSTRP COLS./100 ML 60 na 1310 390 398 2640 52.6 1860 7.00 15000 na CALCIUM DISS. CA MG/L AS CA 46 na 35.6 34.5 34.0 10.6 25.0 47.0 17.0 65.0 na MAGNESIUM DISS MG MG/L AS MG 46 na 7.04 6.70 6.65 2.38 4.50 9.90 3.20 14.0 na ALKALINITY ALK MG/L AS CACO3 60 na 121 120 116 35.0 84.0 160 58.0 227 na SULFATE DISS. SO4 MG/L AS SO4 62 na 16.5 16.0 15.8 4.62 11.0 21.0 7.30 27.0 na CHLORIDE DISS. CL MG/L AS CL 64 na 18.1 16.5 16.7 8.59 11.0 23.3 7.10 66.0 na FLUORIDE DISS. F MG/L AS F 25 na 2.57 2.60 2.55 0.31 2.40 2.71 1.50 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 46 na 118 115 112 36.7 81.0 160 58.0 220 na RESIDUE TOTAL RES MG/L 60 6.67 28.7 13.0 15.6 35.6 5.00 54.9 2.00 179 NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 62 32.3 0.41 0.30 0.36 0.25 0.20 0.60 0.20 1.40 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 2 100 na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 1 100 na na na na na na na na BARIUM DISS. BA D UG/L AS BA 2 na 72.0 72.0 70.4 21.2 na na 57.0 87.0 na BARIUM TOTAL BA T UG/L AS BA 2 50.0 100 100 100 na na na 100 100 10BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 38 94.7 1.00 1.00 1.00 0 na na 1.00 1.00 CADMIUM TOTAL CD T UG/L AS CD 61 90.2 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 CHROMIUM DISS. CR D UG/L AS CR 62 88.7 2.00 1.00 1.46 2.24 1.00 6.00 1.00 7.00 CHROMIUM HEX. CR6 UG/L AS CR 36 86.1 2.60 2.00 2.09 1.82 na na 1.00 5.00 CHROMIUM TOTAL CR T UG/L AS CR 37 54.1 1.76 1.00 1.51 1.25 1.00 2.30 1.00 6.00 COPPER DISS. CU D UG/L AS CU 38 31.6 1.35 1.00 1.26 0.56 1.00 2.00 1.00 3.00 COPPER TOTAL CU T UG/L AS CU 62 6.45 3.45 3.00 2.97 1.94 2.00 6.00 1.00 11.0 IRON TOTAL FE T UG/L AS FE 62 na 1260 640 724 1890 290 2360 120 12000 na IRON DISS. FE D UG/L AS FE 62 3.23 58.9 37.5 39.0 102 19.2 81.7 5.00 790 LEAD DISS. PB D UG/L AS PB 38 86.8 1.60 1.00 1.32 1.34 na na 1.00 4.00 LEAD TOTAL PB T UG/L AS PB 61 36.1 4.49 3.00 3.01 5.86 1.00 7.00 1.00 35.0 4MANGANESE DISS MN D UG/L AS MN 62 na 40.4 40.0 36.3 20.9 20.0 50.0 10 160 na MANGANESE TOT MD T UG/L AS MN 62 na 100 80.0 86.2 74.6 50.0 157 40.0 500 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 2 100 na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 2 na 4.50 4.50 4.24 2.12 na na 3.00 6.00 na NICKEL DISS. NI D UG/L AS NI 38 57.9 1.13 1.00 1.09 0.34 1.00 1.45 1.00 2.00 NICKEL TOTAL NI T UG/L AS NI 38 31.6 2.31 2.00 2.08 1.16 1.00 3.00 1.00 6.00 SILVER DISS. AG D UG/L AS AG 2 50.0 2.00 2.00 2.00 na na na 2.00 2.00 SILVER TOTAL AG T UG/L AS AG 2 100 na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 38 23.7 7.45 6.00 6.71 3.65 4.00 12.5 3.00 16.0 ZINC TOTAL ZN T UG/L AS ZN 62 29.0 30.5 20.0 22.7 36.8 10 40.0 10 240 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 2 100 na na na na na na na na SUSP SED SSED MG/L 80 na 665 42.7 63.0 2250 11.0 398 2.90 11600 na SUSP-SIEVE SIEV % 32 na 74.0 78.0 72.3 15.2 53.0 89.1 41.0 98.3 na ------------------------------------------------------------------------------------------------------------------------------------------------------
STATISTICAL SUMMARIES 11

Table 6. Univariate statistics for water-quality data collected for reach 2, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS C

--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 383 0.26 18.5 13.0 8.52 22.9 1.50 33.8 0.20 222 SPECIFIC COND. CONDF US/CM @ 25C 363 na 338 318 296 168 159 513 75.0 949 nSPECIFIC COND. CONDL MICROSIEMENS/C 255 na 354 336 305 184 161 576 76.0 925 nPH, WH, FIELD PH STANDARD UNITS 250 na 8.17 8.20 8.17 0.28 7.90 8.40 7.20 8.90 nWATER TEMP. TEMP DEGREES 378 na 12.2 12.0 na 8.69 1.00 22.0 0 31.0 nOXYGEN DISS. DO MG/L 253 na 8.84 8.60 8.68 1.72 6.81 11.0 5.70 13.4 nOXYGEN DIS. % %DO % OF SATURATION 238 na 100 99.0 99.9 5.99 95.0 105 82.0 128 nBOD 5-DAY BOD5 MG/L 230 0.87 2.05 1.10 1.25 2.41 0.40 3.50 0.10 15.0 COLIFORM FECAL FCOL COLS./100 ML 244 11.1 950 44.0 49.2 5430 4.00 510 1.00 70000 3FECAL STRPT FSTRP COLS./100 ML 247 0.41 1030 150 167 4210 39.1 879 2.00 50000 8CALCIUM DISS. CA MG/L AS CA 176 na 40.5 32.5 34.8 22.0 18.0 66.0 8.80 98.0 nMAGNESIUM DISS MG MG/L AS MG 176 na 6.45 5.20 5.55 3.71 3.11 11.0 1.20 19.0 nALKALINITY ALK MG/L AS CACO3 241 na 93.1 87.0 85.9 36.0 56.0 135 26.0 183 nSULFATE DISS. SO4 MG/L AS SO4 240 na 54.3 38.0 35.4 47.1 11.0 110 4.00 210 nCHLORIDE DISS. CL MG/L AS CL 244 na 14.5 14.5 10.4 11.4 3.30 23.0 0.20 110 nFLUORIDE DISS. F MG/L AS F 101 na 1.44 1.50 1.39 0.34 1.00 1.80 0.50 2.10 nHARDNESS TOTAL HARD MG/L AS CAO3 176 na 128 100 110 69.8 57.6 210 27.0 310 nRESIDUE TOTAL RES MG/L 240 7.50 156 63.5 48.1 343 8.00 264 1.00 3750 NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na nUN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na nNO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 246 15.0 0.96 0.60 0.64 1.23 0.30 1.40 0.20 9.30 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 144 91.7 1.33 1.00 1.26 0.49 1.00 2.00 1.00 2.00 CADMIUM TOTAL CD T UG/L AS CD 237 92.0 1.11 1.00 1.08 0.31 1.00 1.00 1.00 2.00 CHROMIUM DISS. CR D UG/L AS CR 239 85.4 1.37 1.00 1.21 0.97 1.00 2.00 1.00 6.00 CHROMIUM HEX. CR6 UG/L AS CR 145 84.8 2.50 2.00 1.98 1.71 1.00 5.00 1.00 6.00 CHROMIUM TOTAL CR T UG/L AS CR 141 45.4 4.21 2.00 2.67 5.38 1.00 7.00 1.00 31.0 COPPER DISS. CU D UG/L AS CU 145 26.2 1.53 1.00 1.36 1.01 1.00 2.00 1.00 9.00 COPPER TOTAL CU T UG/L AS CU 241 6.64 6.03 4.00 4.38 6.08 2.00 10 1.00 52.0 IRON TOTAL FE T UG/L AS FE 241 0.41 3350 1300 1550 5630 450 5760 160 50000 IRON DISS. FE D UG/L AS FE 240 7.92 75.0 36.0 33.7 233 8.00 127 4.00 3400 LEAD DISS. PB D UG/L AS PB 145 79.3 1.37 1.00 1.13 1.65 1.00 1.00 1.00 10 LEAD TOTAL PB T UG/L AS PB 239 28.5 7.79 4.00 4.20 13.0 1.00 13.0 1.00 120 MANGANESE DISS MN D UG/L AS MN 240 9.17 42.0 30.0 22.5 42.3 5.00 79.2 1.00 250 MANGANESE TOT MD T UG/L AS MN 241 na 140 100 101 156 50.0 217 10 1400 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 145 35.2 1.94 2.00 1.62 1.48 1.00 2.75 1.00 10 NICKEL TOTAL NI T UG/L AS NI 145 15.9 4.81 3.00 3.44 5.19 1.45 8.00 1.00 36.0 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 144 24.3 7.33 6.00 6.59 3.87 4.00 10 3.00 25.0 ZINC TOTAL ZN T UG/L AS ZN 241 32.8 46.0 23.0 28.9 65.7 10 70.0 10 580 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 62 na 435 117 117 869 16.4 793 4.00 5820 nSUSP-SIEVE SIEV % 31 na 58.7 62.3 55.6 18.2 35.1 78.7 25.4 88.8 n------------------------------------------------------------------------------------------------------------------------------------------------------
12 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table 7. Univariate statistics for water-quality data collected for reach 3, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 480 na 97.6 65.7 59.8 166 24.6 133 0.72 2170 na SPECIFIC COND. CONDF US/CM @ 25C 424 na 839 845 789 273 540 1150 218 1570 na SPECIFIC COND. CONDL MICROSIEMENS/C 193 na 799 804 760 234 533 1070 244 1360 na PH, WH, FIELD PH STANDARD UNITS 199 na 7.97 7.90 7.96 0.25 7.70 8.30 7.09 8.40 na WATER TEMP. TEMP DEGREES 435 na 14.4 14.5 na 7.78 5.50 23.0 0 32.5 na OXYGEN DISS. DO MG/L 200 na 7.87 7.90 7.72 1.57 6.20 9.60 3.90 11.7 na OXYGEN DIS. % %DO % OF SATURATION 183 na 93.1 94.0 92.6 9.62 82.0 102 67.0 130 na BOD 5-DAY BOD5 MG/L 179 0.56 10.3 8.55 5.92 8.64 1.40 20.0 0.20 35.0 COLIFORM FECAL FCOL COLS./100 ML 182 3.30 2050 335 368 6650 58.7 2200 3.00 64000 3FECAL STRPT FSTRP COLS./100 ML 184 na 1920 400 540 5910 125 3000 27.0 66000 na CALCIUM DISS. CA MG/L AS CA 151 na 64.5 62.0 61.9 18.3 45.0 84.2 26.0 110 na MAGNESIUM DISS MG MG/L AS MG 151 na 18.2 17.0 17.0 6.63 11.0 25.0 4.60 36.0 na ALKALINITY ALK MG/L AS CACO3 153 na 131 135 127 33.8 93.0 164 64.0 214 na SULFATE DISS. SO4 MG/L AS SO4 153 na 182 170 164 78.1 110 269 14.0 390 na CHLORIDE DISS. CL MG/L AS CL 144 na 36.9 31.0 31.0 29.6 17.8 51.0 8.70 260 na FLUORIDE DISS. F MG/L AS F 96 na 1.85 1.70 1.82 0.38 1.50 2.30 1.30 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 151 na 237 230 226 71.2 160 310 84.0 420 na RESIDUE TOTAL RES MG/L 187 na 133 72.0 81.6 159 36.6 251 1.00 1130 na NITROGEN AMM TNH3 MG/L AS N 13 7.69 3.97 1.97 0.53 4.49 0.02 9.91 0.01 10 UN-IONIZED AMM NH3- MG/L AS NH3 11 na 2.65 0.04 na 4.73 0 11.2 0 12.0 na NO2 + NO3 DISS NO23 MG/L AS N 13 na 2.20 2.20 2.03 0.92 1.13 3.43 0.93 4.10 na NITROGEN,NO2 NIT MG/L AS N 1 na 0.02 0.02 0.02 na na na 0.02 0.02 na NITROGEN AMM+ TNIT MG/L AS N 186 2.69 4.97 2.20 2.37 5.45 0.50 11.0 0.20 37.0 PHOSPHORUS O OPO4 MG/L AS P 1 na 2.90 2.90 2.90 na na na 2.90 2.90 na ARSENIC DISS. AS D UG/L AS AS 30 26.7 1.95 2.00 1.69 1.13 1.00 4.00 1.00 4.00 ARSENIC TOTAL AS T UG/L AS AS 18 27.8 1.62 1.00 1.45 0.87 1.00 2.00 1.00 4.00 BARIUM DISS. BA D UG/L AS BA 12 na 45.0 43.0 43.8 11.2 33.0 53.9 32.0 71.0 na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 26 na 134 140 121 55.9 60.0 200 50.0 230 na BORON TOTAL B T UG/L AS B 16 na 139 145 124 60.4 55.5 210 40.0 220 na CADMIUM DISS. CD D UG/L AS CD 171 83.6 1.43 1.00 1.33 0.57 1.00 2.00 1.00 3.00 CADMIUM TOTAL CD T UG/L AS CD 180 88.3 1.05 1.00 1.03 0.22 1.00 1.00 1.00 2.00 CHROMIUM DISS. CR D UG/L AS CR 194 64.9 2.31 2.00 1.71 3.08 1.00 3.00 1.00 24.0 CHROMIUM HEX. CR6 UG/L AS CR 159 85.5 1.65 1.00 1.42 1.07 1.00 3.00 1.00 5.00 CHROMIUM TOTAL CR T UG/L AS CR 156 20.5 4.73 3.50 3.51 4.41 2.00 8.00 1.00 29.0 COPPER DISS. CU D UG/L AS CU 171 12.3 3.88 3.00 3.30 2.21 2.00 6.00 1.00 11.0 COPPER TOTAL CU T UG/L AS CU 183 3.28 9.56 8.00 7.85 11.5 4.00 13.3 2.00 150 IRON TOTAL FE T UG/L AS FE 183 na 4160 2400 2580 5430 1060 7420 360 38000 na IRON DISS. FE D UG/L AS FE 154 6.49 47.4 21.5 20.9 152 7.00 48.3 3.00 1400 LEAD DISS. PB D UG/L AS PB 171 75.4 1.40 1.00 1.26 0.80 1.00 2.00 1.00 4.00 LEAD TOTAL PB T UG/L AS PB 180 12.2 10.8 7.00 7.21 12.5 3.00 21.0 1.00 94.0 4MANGANESE DISS MN D UG/L AS MN 153 0.65 50.7 44.5 35.6 38.5 11.0 93.1 4.00 160 MANGANESE TOT MD T UG/L AS MN 141 na 172 140 145 118 90.0 264 30.0 850 na MERCURY DISS. HG D UG/L AS HG 12 66.7 0.30 0.25 0.28 0.14 na na 0.20 0.50 MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 12 75.0 13.3 10 12.6 5.77 na na 10 20.0 MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 169 18.3 3.65 3.00 3.13 2.31 2.00 5.00 1.00 20.0 4NICKEL TOTAL NI T UG/L AS NI 159 0.63 6.60 6.00 5.52 4.12 3.00 11.0 1.00 27.0 SILVER DISS. AG D UG/L AS AG 12 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 54 na 5.28 5.00 5.14 1.25 4.00 6.75 3.00 9.00 na SELENIUM TOTAL SE T UG/L AS SE 36 na 5.31 5.50 5.15 1.24 4.00 6.45 3.00 8.00 na ZINC DISS. ZN D UG/L AS ZN 171 4.68 28.9 21.0 20.4 28.4 8.00 43.4 3.00 160 ZINC TOTAL ZN T UG/L AS ZN 183 1.64 63.4 50.0 49.5 63.5 30.0 90.0 10 650 SULFIDE TOTAL H2S MG/L AS S 15 93.3 1.00 1.00 1.00 na na na 1.00 1.00 CYANIDE TOTAL CYN MG/L AS CN 17 94.1 0.01 0.01 0.01 na na na 0.01 0.01 SUSP SED SSED MG/L 82 na 1220 259 371 2480 101 2050 36.0 11500 na SUSP-SIEVE SIEV % 48 na 69.3 71.5 67.0 16.6 50.3 83.7 33.0 98.0 na ------------------------------------------------------------------------------------------------------------------------------------------------------
STATISTICAL SUMMARIES 13

Table 8. Univariate statistics for water-quality data collected for reach 4, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS C

--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 82 na 90.3 79.5 70.4 60.9 28.2 140 8.50 325 nSPECIFIC COND. CONDF US/CM @ 25C 82 na 1320 1320 1300 200 1120 1510 756 1780 nSPECIFIC COND. CONDL MICROSIEMENS/C 83 na 1300 1300 1290 195 1110 1520 751 1710 nPH, WH, FIELD PH STANDARD UNITS 80 na 8.32 8.30 8.32 0.16 8.20 8.50 7.80 8.70 nWATER TEMP. TEMP DEGREES 81 na 15.8 16.0 na 9.45 4.00 26.7 0 32.0 nOXYGEN DISS. DO MG/L 81 na 8.46 8.10 8.25 1.97 6.40 10.8 5.50 13.7 nOXYGEN DIS. % %DO % OF SATURATION 80 na 98.6 97.0 98.4 7.42 93.0 105 79.0 132 nBOD 5-DAY BOD5 MG/L 58 1.72 6.45 3.90 3.98 6.88 1.30 13.6 0.50 34.0 COLIFORM FECAL FCOL COLS./100 ML 78 3.85 637 160 152 1720 31.2 932 3.00 13000 FECAL STRPT FSTRP COLS./100 ML 77 1.30 1430 395 466 2880 140 2060 17.0 15000 4CALCIUM DISS. CA MG/L AS CA 23 na 96.7 96.0 95.9 12.8 83.2 110 73.0 120 nMAGNESIUM DISS MG MG/L AS MG 23 na 35.6 33.0 34.7 8.22 28.6 46.4 22.0 54.0 nALKALINITY ALK MG/L AS CACO3 23 na 185 192 184 24.0 156 212 146 223 nSULFATE DISS. SO4 MG/L AS SO4 23 na 383 380 376 77.2 310 478 270 550 nCHLORIDE DISS. CL MG/L AS CL 23 na 50.4 52.0 49.8 7.88 40.6 59.0 34.0 62.0 nFLUORIDE DISS. F MG/L AS F 9 na 1.89 1.90 1.88 0.14 1.70 2.05 1.60 2.10 nHARDNESS TOTAL HARD MG/L AS CAO3 23 na 389 380 384 61.9 326 454 270 510 nRESIDUE TOTAL RES MG/L 59 na 519 168 155 1370 29.0 690 7.00 8950 nNITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na nUN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na nNO2 + NO3 DISS NO23 MG/L AS N 1 na 4.70 4.70 4.70 na na na 4.70 4.70 nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 60 1.67 1.36 1.10 1.06 0.96 0.50 2.40 0.20 3.90 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 1 na 4.00 4.00 4.00 na na na 4.00 4.00 nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 1 na 220 220 220 na na na 220 220 nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 23 60.9 0.24 0.20 0.20 0.16 0.10 0.50 0.10 0.50 CADMIUM TOTAL CD T UG/L AS CD 21 81.0 1.50 1.00 1.32 1.00 na na 1.00 3.00 CHROMIUM DISS. CR D UG/L AS CR 23 87.0 1.33 1.00 1.26 0.58 na na 1.00 2.00 CHROMIUM HEX. CR6 UG/L AS CR 0 na na na na na na na na na nCHROMIUM TOTAL CR T UG/L AS CR 21 14.3 8.39 6.50 6.83 5.14 3.85 16.3 1.00 18.0 COPPER DISS. CU D UG/L AS CU 23 na 2.35 2.00 2.19 0.94 2.00 3.40 1.00 5.00 nCOPPER TOTAL CU T UG/L AS CU 20 na 15.6 10.5 10.5 20.9 4.15 23.3 3.00 100 nIRON TOTAL FE T UG/L AS FE 20 na 8980 8950 5550 6540 964 18000 230 20000 nIRON DISS. FE D UG/L AS FE 22 13.6 11.7 8.00 8.99 10.3 4.00 19.0 4.00 39.0 LEAD DISS. PB D UG/L AS PB 23 78.3 0.66 0.70 0.65 0.11 na na 0.50 0.80 LEAD TOTAL PB T UG/L AS PB 20 na 20.0 14.0 10.8 31.2 2.30 19.0 2.00 140 nMANGANESE DISS MN D UG/L AS MN 22 4.55 6.24 3.00 4.15 9.84 2.00 8.10 2.00 48.0 MANGANESE TOT MD T UG/L AS MN 21 na 359 310 246 402 62.0 460 40.0 2000 nMERCURY DISS. HG D UG/L AS HG 1 na 0.50 0.50 0.50 na na na 0.50 0.50 nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 1 na 8.00 8.00 8.00 na na na 8.00 8.00 nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 22 na 3.23 3.00 3.13 0.81 2.00 4.00 2.00 5.00 nNICKEL TOTAL NI T UG/L AS NI 18 na 14.3 11.5 10.3 16.7 4.00 19.3 3.00 78.0 nSILVER DISS. AG D UG/L AS AG 21 95.2 1.00 1.00 1.00 na na na 1.00 1.00 SILVER TOTAL AG T UG/L AS AG 22 90.9 1.00 1.00 1.00 0 na na 1.00 1.00 SELENIUM DISS. SE D UG/L AS SE 19 na 21.3 19.0 17.9 12.8 10 33.0 5.00 53.0 nSELENIUM TOTAL SE T UG/L AS SE 13 na 25.5 22.0 23.2 12.2 16.0 41.0 11.0 56.0 nZINC DISS. ZN D UG/L AS ZN 23 na 8.00 8.00 6.82 4.68 3.00 12.8 3.00 22.0 nZINC TOTAL ZN T UG/L AS ZN 21 4.76 85.5 75.0 66.5 84.4 31.5 109 20.0 420 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 22 na 632 545 393 793 108 925 45.0 3930 nSUSP-SIEVE SIEV % 22 na 64.5 62.5 62.4 15.8 49.1 84.1 27.5 90.0 n------------------------------------------------------------------------------------------------------------------------------------------------------
14 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table 9. Univariate statistics for water-quality data collected for reach 1, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 142 na 39.6 15.0 18.5 74.6 7.21 64.8 2.00 518 na SPECIFIC COND. CONDF US/CM @ 25C 118 na 298 293 280 99.4 179 407 129 565 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 306 301 291 92.4 187 417 138 458 na PH, WH, FIELD PH STANDARD UNITS 58 na 8.14 8.20 8.13 0.24 7.80 8.40 7.60 8.50 na WATER TEMP. TEMP DEGREES 122 na 7.20 7.25 na 4.80 1.50 13.0 0 17.5 na OXYGEN DISS. DO MG/L 58 na 9.74 9.85 9.65 1.27 8.10 11.2 7.70 12.2 na OXYGEN DIS. % %DO % OF SATURATION 57 na 97.8 97.0 97.7 3.38 95.0 101 91.0 109 na BOD 5-DAY BOD5 MG/L 58 3.45 0.61 0.55 0.53 0.38 0.30 0.90 0.20 2.30 COLIFORM FECAL FCOL COLS./100 ML 54 na 350 135 161 556 50.0 668 8.00 3500 na FECAL STRPT FSTRP COLS./100 ML 56 na 415 180 214 682 55.8 735 26.0 4700 na CALCIUM DISS. CA MG/L AS CA 59 na 31.8 31.0 30.2 9.93 19.0 43.0 15.0 50.0 na MAGNESIUM DISS MG MG/L AS MG 59 na 6.35 6.20 5.95 2.15 3.69 8.70 2.70 10 na ALKALINITY ALK MG/L AS CACO3 59 na 104 105 96.7 37.0 56.2 149 39.0 166 na SULFATE DISS. SO4 MG/L AS SO4 58 na 14.5 14.6 14.1 3.32 11.0 18.0 7.20 20.0 na CHLORIDE DISS. CL MG/L AS CL 58 na 16.6 16.0 15.3 6.32 9.25 24.0 6.30 33.7 na FLUORIDE DISS. F MG/L AS F 58 na 2.66 2.70 2.64 0.25 2.50 2.90 1.60 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 106 100 99.9 33.8 64.0 140 49.0 170 na RESIDUE TOTAL RES MG/L 59 3.39 27.1 12.0 10.7 43.2 2.00 42.2 1.00 212 NITROGEN AMM TNH3 MG/L AS N 55 60.0 0.02 0.02 0.02 0.008 0.02 0.03 0.01 0.04 UN-IONIZED AMM NH3- MG/L AS NH3 22 na 0.01 0.002 na 0.02 0 0.04 0 0.04 na NO2 + NO3 DISS NO23 MG/L AS N 55 na 0.83 0.86 0.77 0.27 0.50 1.10 0.12 1.30 na NITROGEN,NO2 NIT MG/L AS N 55 81.8 0.01 0.01 0.01 0.005 0.01 0.02 0.01 0.02 NITROGEN AMM+ TNIT MG/L AS N 59 76.3 0.31 0.21 0.28 0.15 0.20 0.45 0.20 0.70 PHOSPHORUS O OPO4 MG/L AS P 55 80.0 0.01 0.01 0.01 0.005 0.01 0.02 0.01 0.02 ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 1 na 85.7 85.7 85.7 na na na 85.7 85.7 na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 1 na 45.8 45.8 45.8 na na na 45.8 45.8 na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 59 98.3 3.00 3.00 3.00 na na na 3.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 59 96.6 1.00 1.00 1.00 0 na na 1.00 1.00 CHROMIUM TOTAL CR T UG/L AS CR 59 86.4 1.43 1.20 1.36 0.46 1.00 2.07 1.00 2.10 COPPER DISS. CU D UG/L AS CU 59 79.7 1.18 1.00 1.13 0.44 1.00 1.46 0.89 2.50 COPPER TOTAL CU T UG/L AS CU 59 42.4 1.81 1.95 1.63 0.89 1.00 2.95 1.00 4.00 IRON TOTAL FE T UG/L AS FE 59 na 925 440 541 1180 180 1500 130 5900 na IRON DISS. FE D UG/L AS FE 59 5.08 40.9 37.5 31.7 30.9 12.5 60.0 6.52 189 LEAD DISS. PB D UG/L AS PB 59 96.6 1.45 1.45 1.33 0.79 na na 0.89 2.00 LEAD TOTAL PB T UG/L AS PB 59 50.8 3.72 2.00 2.81 3.17 1.10 8.00 1.00 12.0 MANGANESE DISS MN D UG/L AS MN 59 1.69 30.2 29.1 28.2 10.6 17.0 41.5 9.00 53.0 MANGANESE TOT MD T UG/L AS MN 59 na 86.2 60.0 70.4 68.3 40.0 120 30.0 350 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 1 na 2.48 2.48 2.48 na na na 2.48 2.48 na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 93.2 1.32 1.15 1.27 0.47 na na 1.00 2.00 NICKEL TOTAL NI T UG/L AS NI 59 64.4 1.68 1.00 1.40 1.39 1.00 2.70 1.00 7.00 SILVER DISS. AG D UG/L AS AG 1 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 52.5 4.79 5.00 4.64 1.20 3.15 6.00 3.00 7.00 4ZINC TOTAL ZN T UG/L AS ZN 59 61.0 21.3 20.0 19.0 10.6 10 30.0 10 50.0 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 51 na 383 31.0 45.1 1400 9.96 315 2.90 8020 na SUSP-SIEVE SIEV % 1 na 60.0 60.0 60.0 na na na 60.0 60.0 na ------------------------------------------------------------------------------------------------------------------------------------------------------
STATISTICAL SUMMARIES 15

Table 10. Univariate statistics for water-quality data collected for reach 2, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS C

--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 386 na 27.6 16.0 12.5 44.3 2.70 41.3 0.27 333 nSPECIFIC COND. CONDF US/CM @ 25C 362 na 367 342 325 176 184 526 77.0 901 nSPECIFIC COND. CONDL MICROSIEMENS/C 236 na 383 351 327 203 166 663 75.0 931 nPH, WH, FIELD PH STANDARD UNITS 230 na 8.20 8.20 8.19 0.31 7.80 8.50 7.30 9.00 nWATER TEMP. TEMP DEGREES 366 na 11.6 11.5 na 8.07 1.53 21.0 0 30.0 nOXYGEN DISS. DO MG/L 224 na 8.80 8.60 8.65 1.60 7.00 10.7 5.80 12.6 nOXYGEN DIS. % %DO % OF SATURATION 223 na 99.6 99.0 99.5 5.50 95.0 104 86.0 125 nBOD 5-DAY BOD5 MG/L 234 2.14 0.93 0.80 na 0.73 0.40 1.40 0 5.50 COLIFORM FECAL FCOL COLS./100 ML 222 2.25 138 45.0 45.0 278 8.70 233 1.00 2480 FECAL STRPT FSTRP COLS./100 ML 232 0.43 150 86.0 73.8 244 20.8 240 3.00 2100 CALCIUM DISS. CA MG/L AS CA 236 na 42.9 31.0 36.1 24.7 19.8 76.0 8.70 110 nMAGNESIUM DISS MG MG/L AS MG 236 na 6.95 5.13 5.73 4.52 3.26 13.5 1.10 23.0 nALKALINITY ALK MG/L AS CACO3 236 na 97.2 90.0 89.3 37.9 58.0 146 20.0 197 nSULFATE DISS. SO4 MG/L AS SO4 236 na 58.2 32.2 33.1 56.8 8.17 140 3.00 240 nCHLORIDE DISS. CL MG/L AS CL 236 na 18.4 20.0 14.8 9.92 6.16 27.2 1.40 54.0 nFLUORIDE DISS. F MG/L AS F 236 na 1.39 1.40 1.36 0.27 1.10 1.70 0.50 2.10 nHARDNESS TOTAL HARD MG/L AS CAO3 236 na 136 97.5 114 79.6 63.6 245 26.0 370 nRESIDUE TOTAL RES MG/L 235 5.96 104 58.0 34.4 165 5.00 187 1.00 1320 NITROGEN AMM TNH3 MG/L AS N 224 39.7 0.10 0.03 0.04 0.21 0.02 0.15 0.01 1.30 UN-IONIZED AMM NH3- MG/L AS NH3 130 na 0.04 0.01 na 0.15 0 0.04 0 1.34 nNO2 + NO3 DISS NO23 MG/L AS N 224 19.6 1.80 1.70 1.03 1.36 0.13 3.40 0.05 4.80 NITROGEN,NO2 NIT MG/L AS N 224 52.7 0.02 0.02 0.02 0.02 0.01 0.03 0.01 0.18 NITROGEN AMM+ TNIT MG/L AS N 236 23.7 0.52 0.40 0.44 0.34 0.30 0.79 0.20 2.00 PHOSPHORUS O OPO4 MG/L AS P 224 21.9 0.30 0.11 0.15 0.39 0.05 0.88 0.01 2.10 ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 236 99.2 1.50 1.50 1.41 0.71 na na 1.00 2.00 CADMIUM TOTAL CD T UG/L AS CD 235 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 236 95.3 2.10 1.10 1.67 1.66 1.00 4.40 1.00 6.00 CHROMIUM HEX. CR6 UG/L AS CR 234 94.0 1.43 1.00 1.32 0.65 1.00 2.00 1.00 3.00 CHROMIUM TOTAL CR T UG/L AS CR 232 71.1 2.74 2.00 2.29 2.00 1.40 4.86 1.00 12.0 COPPER DISS. CU D UG/L AS CU 236 47.5 1.63 1.00 1.42 1.09 1.00 2.00 1.00 7.40 COPPER TOTAL CU T UG/L AS CU 235 20.4 3.86 3.00 3.01 3.86 2.00 5.08 1.00 33.0 IRON TOTAL FE T UG/L AS FE 235 na 1940 1100 1130 2670 384 3360 209 20000 nIRON DISS. FE D UG/L AS FE 229 19.7 72.5 60.0 38.1 67.9 7.00 140 3.00 310 LEAD DISS. PB D UG/L AS PB 236 98.3 2.75 2.50 2.34 1.71 na na 1.00 5.00 LEAD TOTAL PB T UG/L AS PB 235 42.1 4.81 3.00 3.21 6.43 1.51 7.00 1.00 43.0 MANGANESE DISS MN D UG/L AS MN 236 5.08 46.7 30.5 21.9 66.3 3.99 70.3 1.00 510 MANGANESE TOT MD T UG/L AS MN 235 0.43 109 80.0 87.3 86.7 50.0 160 10 590 MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 236 57.6 1.50 1.00 1.39 0.58 1.00 2.00 1.00 3.20 NICKEL TOTAL NI T UG/L AS NI 233 24.9 2.95 2.00 2.47 2.31 1.20 4.00 1.00 18.0 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 236 61.9 7.41 6.72 6.54 3.85 4.00 12.0 3.00 20.0 ZINC TOTAL ZN T UG/L AS ZN 235 44.3 24.6 20.0 19.5 22.3 10 30.0 10 160 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 20 na 659 125 226 1050 59.6 2160 48.0 3770 nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
16 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table 11. Univariate statistics for water-quality data collected for reach 3, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 478 na 144 90.0 82.0 329 29.0 193 4.00 5750 na SPECIFIC COND. CONDF US/CM @ 25C 445 na 818 804 769 262 533 1120 222 1390 na SPECIFIC COND. CONDL MICROSIEMENS/C 195 na 772 772 736 222 530 1020 237 1240 na PH, WH, FIELD PH STANDARD UNITS 196 na 8.04 8.00 8.04 0.20 7.90 8.30 7.50 8.40 na WATER TEMP. TEMP DEGREES 456 na 13.0 13.0 na 7.15 4.50 21.0 0 29.0 na OXYGEN DISS. DO MG/L 196 na 8.37 8.20 8.26 1.42 6.86 10 5.90 12.0 na OXYGEN DIS. % %DO % OF SATURATION 194 na 93.8 95.0 93.4 7.93 85.0 101 73.0 125 na BOD 5-DAY BOD5 MG/L 191 na 7.59 5.30 3.96 7.79 0.80 15.0 0.10 34.0 na COLIFORM FECAL FCOL COLS./100 ML 177 0.56 396 200 194 530 50.7 749 9.00 3300 30FECAL STRPT FSTRP COLS./100 ML 185 na 423 240 236 535 74.8 801 10 3300 na CALCIUM DISS. CA MG/L AS CA 197 na 62.9 62.0 60.3 17.1 45.7 81.0 24.0 100 na MAGNESIUM DISS MG MG/L AS MG 197 na 18.1 17.0 16.9 6.17 12.0 25.0 4.00 33.0 na ALKALINITY ALK MG/L AS CACO3 197 na 126 127 121 33.3 87.7 160 55.0 205 na SULFATE DISS. SO4 MG/L AS SO4 197 na 184 170 168 72.9 112 270 32.0 380 na CHLORIDE DISS. CL MG/L AS CL 197 na 35.7 37.0 33.0 12.9 20.6 51.0 8.40 59.0 na FLUORIDE DISS. F MG/L AS F 197 na 1.83 1.80 1.80 0.31 1.50 2.20 0.80 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 197 na 231 230 221 65.9 160 300 76.0 380 na RESIDUE TOTAL RES MG/L 197 na 118 76.0 76.3 151 31.7 177 14.0 1340 na NITROGEN AMM TNH3 MG/L AS N 186 14.0 2.24 0.53 0.41 3.12 0.03 6.00 0.01 11.0 UN-IONIZED AMM NH3- MG/L AS NH3 159 na 1.67 0.09 na 3.23 0 4.87 0 13.4 na NO2 + NO3 DISS NO23 MG/L AS N 186 0.54 3.32 3.00 2.90 1.64 1.60 5.30 0.59 7.80 NITROGEN,NO2 NIT MG/L AS N 186 17.2 0.11 0.08 0.07 0.15 0.02 0.20 0.01 1.60 NITROGEN AMM+ TNIT MG/L AS N 197 7.11 3.18 1.20 1.50 3.81 0.30 7.70 0.20 16.0 PHOSPHORUS O OPO4 MG/L AS P 186 1.61 0.67 0.32 0.27 0.75 0.04 1.60 0.02 2.80 ARSENIC DISS. AS D UG/L AS AS 30 53.3 1.29 1.00 1.22 0.47 1.00 2.00 1.00 2.00 ARSENIC TOTAL AS T UG/L AS AS 27 18.5 2.30 2.00 2.11 0.98 1.01 3.00 1.00 5.00 BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 30 na 115 90.7 95.0 65.0 43.3 194 20.0 230 na BORON TOTAL B T UG/L AS B 29 na 113 90.0 97.9 58.0 50.0 185 35.0 230 na CADMIUM DISS. CD D UG/L AS CD 197 99.5 2.00 2.00 2.00 na na na 2.00 2.00 CADMIUM TOTAL CD T UG/L AS CD 197 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 197 92.4 1.52 1.20 1.42 0.62 1.04 2.36 1.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 196 94.9 2.20 2.00 2.02 0.92 1.00 3.35 1.00 4.00 CHROMIUM TOTAL CR T UG/L AS CR 195 30.8 2.40 2.00 2.05 1.76 1.20 3.32 1.00 15.0 COPPER DISS. CU D UG/L AS CU 197 17.3 2.50 2.00 2.16 1.54 1.00 4.00 1.00 12.1 COPPER TOTAL CU T UG/L AS CU 197 1.02 5.94 5.00 5.03 3.72 3.00 9.00 1.00 28.0 IRON TOTAL FE T UG/L AS FE 197 na 2860 1700 1800 4370 690 4630 280 45000 na IRON DISS. FE D UG/L AS FE 197 12.7 30.8 20.0 18.2 62.0 6.00 42.1 3.00 770 LEAD DISS. PB D UG/L AS PB 197 97.0 1.33 1.00 1.20 0.82 1.00 2.90 1.00 3.00 LEAD TOTAL PB T UG/L AS PB 197 1.02 6.17 4.00 4.13 7.30 2.00 10 1.00 50.0 MANGANESE DISS MN D UG/L AS MN 197 2.54 42.9 32.4 29.9 32.1 11.0 79.1 2.00 150 MANGANESE TOT MD T UG/L AS MN 197 na 136 110 117 91.2 70.0 180 30.0 809 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 197 18.3 2.54 3.00 2.26 1.20 1.00 3.67 1.00 9.00 NICKEL TOTAL NI T UG/L AS NI 196 1.53 4.41 4.00 3.86 2.59 2.00 6.00 1.00 22.0 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 94 2.13 4.15 4.00 3.86 1.48 2.60 6.00 1.00 8.00 SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 197 19.3 16.5 15.0 13.4 9.99 5.36 29.0 3.00 50.0 4ZINC TOTAL ZN T UG/L AS ZN 197 3.05 36.0 30.0 31.2 21.5 20.0 50.0 10 200 SULFIDE TOTAL H2S MG/L AS S 30 93.3 0.80 0.80 0.80 0 na na 0.80 0.80 CYANIDE TOTAL CYN MG/L AS CN 30 100 na na na na na na na na SUSP SED SSED MG/L 49 na 663 149 199 1760 63.5 630 44.0 10200 na SUSP-SIEVE SIEV % 1 na 46.0 46.0 46.0 na na na 46.0 46.0 na ------------------------------------------------------------------------------------------------------------------------------------------------------
STATISTICAL SUMMARIES 17

Table 12. Univariate statistics for water-quality data collected for reach 4, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent

Samples % < MRL DETECTIONS C

--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 63 na 177 122 113 266 41.2 262 11.0 2040 nSPECIFIC COND. CONDF US/CM @ 25C 63 na 1210 1220 1180 256 957 1470 591 2030 nSPECIFIC COND. CONDL MICROSIEMENS/C 61 na 1220 1200 1190 253 960 1490 656 2040 nPH, WH, FIELD PH STANDARD UNITS 61 na 8.31 8.40 8.31 0.13 8.20 8.40 7.90 8.50 nWATER TEMP. TEMP DEGREES 63 na 14.4 14.5 na 8.23 4.80 24.4 0 30.5 nOXYGEN DISS. DO MG/L 61 na 8.62 8.40 8.49 1.55 6.73 10.4 6.10 11.6 nOXYGEN DIS. % %DO % OF SATURATION 61 na 98.7 98.0 98.6 4.11 95.0 103 90.0 115 nBOD 5-DAY BOD5 MG/L 59 na 3.85 2.40 na 4.27 0.80 7.10 0 22.0 nCOLIFORM FECAL FCOL COLS./100 ML 56 na 370 135 144 564 28.1 836 10 2800 nFECAL STRPT FSTRP COLS./100 ML 58 na 518 160 195 810 47.2 1240 10 3200 nCALCIUM DISS. CA MG/L AS CA 3 na 100 100 100 9.50 na na 91.0 110 nMAGNESIUM DISS MG MG/L AS MG 3 na 36.7 37.0 36.5 4.51 na na 32.0 41.0 nALKALINITY ALK MG/L AS CACO3 4 na 196 196 195 21.2 na na 173 220 nSULFATE DISS. SO4 MG/L AS SO4 3 na 380 370 377 55.7 na na 330 440 nCHLORIDE DISS. CL MG/L AS CL 3 na 58.0 56.0 57.9 4.36 na na 55.0 63.0 nFLUORIDE DISS. F MG/L AS F 0 na na na na na na na na na nHARDNESS TOTAL HARD MG/L AS CAO3 3 na 400 400 399 40.0 na na 360 440 nRESIDUE TOTAL RES MG/L 58 1.72 333 194 186 481 71.0 436 6.00 2410 NITROGEN AMM TNH3 MG/L AS N 57 26.3 0.15 0.03 0.05 0.31 0.02 0.24 0.02 1.50 UN-IONIZED AMM NH3- MG/L AS NH3 41 na 0.04 0.02 na 0.11 0 0.05 0 0.71 nNO2 + NO3 DISS NO23 MG/L AS N 58 na 5.10 5.20 4.82 1.58 3.01 7.02 2.00 7.50 nNITROGEN,NO2 NIT MG/L AS N 56 46.4 0.03 0.02 0.02 0.02 0.01 0.05 0.01 0.09 NITROGEN AMM+ TNIT MG/L AS N 59 na 1.05 0.80 0.80 0.94 0.40 1.60 0.20 4.60 nPHOSPHORUS O OPO4 MG/L AS P 56 na 0.52 0.40 0.42 0.35 0.25 0.95 0.11 1.50 nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 3 66.7 0.10 0.10 0.10 na na na 0.10 0.10 CADMIUM TOTAL CD T UG/L AS CD 3 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 3 66.7 2.00 2.00 2.00 na na na 2.00 2.00 CHROMIUM HEX. CR6 UG/L AS CR 0 na na na na na na na na na nCHROMIUM TOTAL CR T UG/L AS CR 3 na 6.33 3.00 4.38 6.66 na na 2.00 14.0 nCOPPER DISS. CU D UG/L AS CU 3 na 2.33 2.00 2.29 0.58 na na 2.00 3.00 nCOPPER TOTAL CU T UG/L AS CU 3 na 8.33 8.00 8.32 0.58 na na 8.00 9.00 nIRON TOTAL FE T UG/L AS FE 3 na 4500 4700 4340 1410 na na 3000 5800 nIRON DISS. FE D UG/L AS FE 3 na 11.3 13.0 10.8 3.79 na na 7.00 14.0 nLEAD DISS. PB D UG/L AS PB 3 66.7 0.80 0.80 0.80 na na na 0.80 0.80 LEAD TOTAL PB T UG/L AS PB 3 na 11.3 8.00 9.86 7.57 na na 6.00 20.0 nMANGANESE DISS MN D UG/L AS MN 3 na 5.00 5.00 4.72 2.00 na na 3.00 7.00 nMANGANESE TOT MD T UG/L AS MN 3 na 200 200 197 40.0 na na 160 240 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 3 na 2.67 3.00 2.62 0.58 na na 2.00 3.00 nNICKEL TOTAL NI T UG/L AS NI 3 na 6.33 7.00 6.26 1.15 na na 5.00 7.00 nSILVER DISS. AG D UG/L AS AG 3 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 3 100 na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 31 3.23 16.5 14.5 15.0 7.64 8.94 26.0 6.00 38.0 SELENIUM TOTAL SE T UG/L AS SE 3 na 23.7 21.0 23.1 6.43 na na 19.0 31.0 nZINC DISS. ZN D UG/L AS ZN 3 na 8.67 9.00 8.41 2.52 na na 6.00 11.0 nZINC TOTAL ZN T UG/L AS ZN 3 na 30.0 40.0 25.2 17.3 na na 10 40.0 nSULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 3 na 352 365 343 91.7 na na 254 436 nSUSP-SIEVE SIEV % 3 na 43.9 54.3 36.8 25.8 na na 14.6 62.9 n------------------------------------------------------------------------------------------------------------------------------------------------------
18 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figures describing correlations among waterquality properties and constituents for each reach 

(figs. 3–6) were compiled from correlation matrices 

for all stations in a given reach. Individual matrices, 

which are shown graphically in the Appendix, were 

reviewed to extract pairs having correlation coefficients with an absolute value greater than or equal 

to 0.80. A natural log transformation was applied to 

all values for the correlation exercise; the transformation sometimes provides more significant results for 

water-quality properties or constituents that range 

from very low values to very high values. The differences between the correlation matrices derived 

without the transformation and those presented in this 

report were generally minor except for one property, 

flow (shown as CFS in figures). Correlations of flow 

with other properties and constituents had higher absolute values when computed with transformed data than 

when computed with untransformed data. 

Summaries depicting the spatial, or areal, 

relations as a function of relative station rank within 

the study area, and station, or local, variation for 

water-quality properties and constituents for each 

station during each evaluation period are presented 

in figures 7 and 8. The figures were prepared using 

station means to represent areal ranks and the 15th and 

85 percentile of station values to describe local variations (from station means) for each water-quality property or constituent. To indicate areal variability within 

the study area, the rank for a given station is expressed 

as a percentage of the range of means for the given 

water-quality property or constituent from all stations 

in the study area. For example, figure 7 indicates that, 

based on the samples collected, the mean flow (indicated as CFS) at station 4905 is less than the mean 

flow at station 5500, which is downstream from 

station 4905, and that both are substantially greater 

than the mean flow at station 3700 at the beginning 

of reach 1. 

To indicate local variation, or variation in 

measurements made at a given station, 15th and 

85th percentiles were compared to the station mean. 

The position of the mean value in the distribution for 

all values measured at a given station is indicated with 

a horizontal bar, and the distance from the mean to the 

15th and 85th percentiles is indicated with vectors or 

“whiskers” drawn from the mean. The length of each 

whisker is directly proportional to the difference 

between the mean value and the 15th (whisker going 

downward) and 85th (whisker going upward) percentiles. For example, figure 7 indicates that the difference between the mean value and the 85th percentile 

for flow at station 5500 is very small compared to the 

difference between the mean and the 15th percentile. 

This indicates that the distribution of the series of flow 

measurements is not symmetrical about the mean as 

described in the next paragraph.

Figures 7 and 8 provide information about relative relations between water-quality properties and 

constituents for a given station and between stations. 

To assign quantitative values to information provided 

in figures 7 and 8, it is necessary to refer to the tables 

of univariate statistics in the Appendix. For example, 

table A6 indicates that, for station 5500 (1987 to 

1992), the mean value for flow (discharge) was 

92.6 cubic feet per second. The table also indicates 

this mean value is a little more than 2.5 times the 

median value of 35.5 cubic feet per second and that 

the mean is influenced by the maximum of 2,170 cubic 

feet per second. Readers that are concerned about what 

results might be affected by this bias toward high 

flow can look at figure 3 and determine that discharge 

is correlated with specific conductance, calcium, 

magnesium, alkalinity, and hardness. 

General Water-Quality Characteristics

Edelmann (1990) described many of the basic 

processes affecting water-quality conditions and the 

resulting phenomena in the study area. The observations made in that report remained applicable during 

the analysis period for this report. Figures 7 and 8 

highlight many of the phenomena described by 

Edelmann, and some are briefly reviewed here.

Some water-quality properties and constituents 

show a clear and almost steady increase from the headwater portion of the system to the end of the system. 

Flow is an excellent example of this phenomenon. 

Figures 7 and 8 clearly show that mean values of 

flow increase through the system. The more detailed 

summary data in table 4 provide an indication 

that flow is related to drainage area. For instance, 

selection of almost any duration interval shows 

that flow in cubic feet per second increases steadily 

though the system but that flow expressed as cubic 

feet per second per square mile (cfsm in table 4), 

which normalizes the effect of drainage area, stays 

relatively constant through the system.
STATISTICAL SUMMARIES 19 Figure 3. Correlation among water-quality properties and constituents within reach 1.
20 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure 4. Correlation among water-quality properties and constituents within reach 2.
STATISTICAL SUMMARIES 21 Figure 5. Correlation among water-quality properties and constituents within reach 3.
22 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure 6. Correlation among water-quality properties and constituents within reach 4.
STATISTICAL SUMMARIES 23 Figure 7. Rank in study area (areal) and station (local) variation of water-quality properties and constituents from samples collected 

Monument Creeks for the period October 1987 through September 1992.
24 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure 8. Rank in study area (areal) and station (local) variation of water-quality properties and constituents from samples collecte

Monument Creeks for the period October 1992 through September 1997.
SUMMARY OF WATER-QUALITY CHARACTERISTICS COMPARED TO IN-STREAM REGULATORY STANDARDS 25

The correlation summaries presented in 

figures 3–6 indicate that flow is correlated fairly well 

only with specific conductance and most of the available major ions such as calcium, magnesium, and 

sulfate; flow also correlates fairly well with some 

major-ion-related properties such as alkalinity and 

hardness. Increases in these properties and constituents are more complicated to explain than the relatively simple example of flow; however, they are 

certainly related to changes in geology, land use, 

and water use. 

Another very prominent phenomenon present in 

the system is changes in water-quality properties and 

constituents downstream from station 5500 (figs. 7 and 

8). In this area, some water-quality properties such as 

pH and dissolved oxygen noticeably decreased. Other 

water-quality properties and constituents such as 5-day 

biochemical oxygen demand; chloride; nutrients such 

as nitrogen ammonia, un-ionized ammonia, and orthophosphorus; and minor elements such as boron, 

copper, nickel, and zinc noticeably increased.

SUMMARY OF WATER-QUALITY 

CHARACTERISTICS COMPARED TO 

IN-STREAM REGULATORY STANDARDS

Regulatory criteria that can be used to assign 

in-stream regulatory standards to classified streams 

are established by the CDPHE (Colorado Department 

of Public Health and Environment, 1998). In-stream 

regulatory standards are referred to simply as 

“standards” in this section. Reaches 1, 2, 3, and 4 

correspond to stream segments classified by CDPHE 

for standards (table 1). Standards normally apply 

throughout the reach; however, the reach 3 standard 

for dissolved manganese has a point of compliance, 

the Pinello Ranch Clear Well, located downstream 

from the beginning of the reach (fig. 1). Most standards can be compared to concentrations determined 

from individual samples to evaluate water-quality 

conditions in streams; however, the CDPHE recommends that, for fecal coliform, the geometric mean 

(listed in tables 5–12 and Appendix tables) be used 

rather than individual concentrations.

In this report, results were compared to the 

most stringent standard available, which in most 

cases was the chronic standard for aquatic life. Many 

standards for aquatic life are straightforward fixed 

values. Other standards, specifically for the following 

metals—cadmium, chromium, copper, lead, nickel, 

silver, and zinc—are calculated values. Fixed and 

calculated standards are periodically reviewed and 

updated by the CDPHE. Calculated standards for the 

listed metals are a function of hardness values. The 

CDPHE guidelines for calculating standards provide 

some flexibility in determining what hardness value to 

use for the calculations; however, the guidelines do 

specify that a hardness value that is representative of 

low-flow conditions should be used in the calculation. 

The hardness values used to calculate the standards for 

this report were the 85th percentile, based on data 

from October 1992 through September 1997, except 

for station 6500, which had relatively few values, 

so the period was extended back to October 1987. 

Because hardness and flow have an inverse relation in 

the study area (figs. A1–11), the 85th percentile hardness values are representative of low-flow conditions. 

The fixed and calculated standards used in this report 

are listed in table 2 and also are included in tables 

of univariate statistics for each station included in 

the Appendix. 

It should also be noted that there is a standard for nitrate. In this report, concentrations of nitrate 

plus nitrite have been compared to the nitrate standard. 

Concentrations for nitrite are typically a very small 

component of this sum, and the use of nitrate plus 

nitite concentrations as a surrogate for nitrate is 

acceptable. 

Water-quality properties and constituents for 

each evaluation period were compared to the standards 

listed in table 2. The results of the comparison are 

shown graphically in figures 9 and 10; measurements 

of water-quality properties and constituents that 

exceeded standards are also summarized in table 13.

For many water-quality properties or constituents that have standards, the samples collected showed 

no exceedances. Some water-quality properties and 

constituents—fecal coliform, total iron, and dissolved 

manganese—showed widespread exceedances with 

incidence rates that were usually relatively low. For 

example, figure 10 shows that, for the second evaluation period, results from samples analyzed for fecal 

coliform exceeded standards at almost every station 

in the system. Table 13 indicates that the percentage 

of samples at a given station that exceeded the fecal 

coliform standard, except for station 6300 where 

no exceedances were noted, was as little as about 

2 percent to as much as about 40 percent, and that 

64 percent of the stations had incidence rates of less 

than 15 percent. 
26 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure 9. Summary of in-stream regulatory standard exceedance for samples from Fountain and Monument Creeks for the period 

September 1992.
SUMMARY OF WATER-QUALITY CHARACTERISTICS COMPARED TO IN-STREAM REGULATORY STANDARDS 27 Figure 10. Summary of in-stream regulatory standard exceedance for samples from Fountain and Monument Creeks for the perio

through September 1997.
28 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table 13. Cases of in-stream regulatory standard exceedances

[Constituent and property abbreviations shown in table 2; Standard, in-stream

standard as listed in table 2, all standards units indicated in table 2; NS,

number of samples; NE, number of exceedances; Percent, percentage of samples

that exceeded standard]

-----------------------------------------------------------------------------------

October 1987 - October 1992 -

September 1992 September 1997

---------------- ----------------

Station Constituent Standard NS NE Percent NS ND Percent

------------------------------------------------------------------------------------

3700 WATER TEMPERATURE 20.0 123 1 0.81 122 0 0.00

4000 OXYGEN DISSOLVED 6.00 65 2 3.08 56 0 0.00

4905 OXYGEN DISSOLVED 6.00 59 1 1.70 57 1 1.75

5530 OXYGEN DISSOLVED 5.00 65 1 1.54 58 0 0.00

5905 OXYGEN DISSOLVED 5.00 59 2 3.40 59 0 0.00

3700 COLIFORM FECAL 200 61 34 55.74 54 21 38.90

3747 COLIFORM FECAL 200 62 3 4.83 55 1 1.82

3780 COLIFORM FECAL 200 63 3 4.76 56 1 1.79

4000 COLIFORM FECAL 200 62 17 27.42 56 16 28.57

4905 COLIFORM FECAL 200 57 35 61.41 55 20 36.36

5500 COLIFORM FECAL 2000 57 15 26.31 53 0 0.00

5530 COLIFORM FECAL 2000 58 11 18.97 56 4 7.14

5533 COLIFORM FECAL 2000 34 3 8.82 55 1 1.82

5905 COLIFORM FECAL 2000 59 4 6.78 53 2 3.77

6500 COLIFORM FECAL 2000 78 4 5.13 56 2 3.57

5905 SULFATE DISSOLVED 330 36 4 11.11 59 2 3.39

6300 SULFATE DISSOLVED 330 12 3 25.00 20 3 15.00

6500 SULFATE DISSOLVED 490 23 2 8.70 3 0 0.00

5500 CHLORIDE DISSOLVED 250 62 1 1.61 59 0 0.00

3700 FLUORIDE DISSOLVED 2.00 25 23 92.00 58 56 96.55

3747 FLUORIDE DISSOLVED 2.00 25 0 0.00 59 1 1.70

4000 FLUORIDE DISSOLVED 2.00 25 1 4.00 59 0 0.00

5500 FLUORIDE DISSOLVED 2.00 30 12 40.00 59 24 40.68

5530 FLUORIDE DISSOLVED 2.00 29 6 20.69 59 10 16.95

5533 FLUORIDE DISSOLVED 2.00 25 4 16.00 58 13 22.41

5905 FLUORIDE DISSOLVED 2.00 25 1 4.00 59 5 8.48

6300 FLUORIDE DISSOLVED 2.00 12 4 33.33 20 3 15.00

6500 FLUORIDE DISSOLVED 2.00 9 1 11.11 0 0 0.00

5530 UN-IONIZED AMMONIA 0.10 4 1 75.00 55 23 41.82

5533 UN-IONIZED AMMONIA 0.10 0 0 0.00 54 25 46.30

5530 NITROGEN,NITRITE 1.00 1 0 0.00 56 1 1.79

5533 NITROGEN,NITRITE 1.00 0 0 0.00 55 1 1.82

3700 IRON DISSOLVED 300 62 1 1.61 59 0 0.00

3747 IRON DISSOLVED 300 60 0 0.00 58 2 3.45

4000 IRON DISSOLVED 300 60 2 3.33 58 0 0.00

5500 IRON DISSOLVED 300 65 3 4.62 59 0 0.00

5530 IRON DISSOLVED 300 41 0 0.00 59 1 1.70
SUMMARY OF WATER-QUALITY CHARACTERISTICS COMPARED TO IN-STREAM REGULATORY STANDARDS 29

Table 13. Cases of in-stream regulatory standard exceedances--continued

[Constituent and property abbreviations shown in table 2; Standard, in-stream

standard as listed in table 2, all standards units indicated in table 2; NS,

number of samples; NE, number of exceedances; Percent, percentage of samples

that exceeded standard]

-----------------------------------------------------------------------------------

October 1987 - October 1992 -

September 1992 September 1997

---------------- ----------------

Station Constituent Standard NS NE Percent NS ND Percent

------------------------------------------------------------------------------------

3700 IRON TOTAL 1000 62 18 29.03 59 14 23.73

3747 IRON TOTAL 1000 60 7 11.67 58 3 5.17

3780 IRON TOTAL 1000 60 13 21.67 59 12 20.34

4000 IRON TOTAL 1000 60 57 95.00 59 56 94.92

4905 IRON TOTAL 1000 61 57 93.44 59 51 86.44

5500 IRON TOTAL 8000 61 9 14.75 59 2 3.39

5530 IRON TOTAL 8000 57 5 8.77 59 1 1.70

5533 IRON TOTAL 8000 36 1 2.78 59 0 0.00

5905 IRON TOTAL 8000 57 9 15.79 59 7 11.86

6300 IRON TOTAL 8000 8 2 25.00 20 2 10.00

6500 IRON TOTAL 5100 20 13 65.00 3 1 33.33

3780 LEAD DISSOLVED 3.67 36 0 0.00 59 1 1.70

5533 LEAD DISSOLVED 11.9 36 1 2.78 59 0 0.00

3700 MANGANESE DISSOLVED 50.0 62 8 12.90 59 1 1.70

3747 MANGANESE DISSOLVED 71.0 60 11 18.33 59 29 49.15

3780 MANGANESE DISSOLVED 71.0 60 29 48.33 59 3 5.09

4000 MANGANESE DISSOLVED 71.0 60 1 1.67 59 0 0.00

5500 MANGANESE DISSOLVED 50.0 65 13 20.00 59 2 3.39

5530 MANGANESE DISSOLVED 50.0 40 31 77.50 59 39 66.10

5533 MANGANESE DISSOLVED 50.0 36 27 75.00 59 40 67.80

5905 MANGANESE DISSOLVED 50.0 36 22 61.11 59 33 55.93

6300 MANGANESE DISSOLVED 50.0 12 1 8.33 20 0 0.00

5500 MERCURY DISSOLVED 0.10 4 1 25.00 0 0 0.00

5530 MERCURY DISSOLVED 0.10 4 2 50.00 0 0 0.00

6300 MERCURY DISSOLVED 0.10 4 1 25.00 0 0 0.00

6500 MERCURY DISSOLVED 0.10 1 1 100.00 0 0 0.00

3700 SILVER DISSOLVED 0.13 2 1 50.00 1 0 0.00

5500 SELENIUM DISSOLVED 5.00 4 1 25.00 28 10 35.71

5530 SELENIUM DISSOLVED 5.00 25 10 40.00 28 2 7.14

5905 SELENIUM DISSOLVED 5.00 21 9 42.86 29 4 13.80

6500 SELENIUM DISSOLVED 20.00 19 7 36.84 31 6 19.36

5500 SULFIDE TOTAL 0.002 6 0 0.00 10 1 10.00

5530 SULFIDE TOTAL 0.002 5 1 20.00 10 0 0.00

5905 SULFIDE TOTAL 0.002 4 0 0.00 10 1 10.00

5530 CYANIDE TOTAL 0.005 6 1 16.67 10 0 0.00

5905 CYANIDE TOTAL 0.005 6 1 16.67 10 0 0.00

-----------------------------------------------------------------------------------
30 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figures 9 and 10 indicate that some waterquality properties and constituents have localized 

exceedances. This is apparent for sulfate, in the lower 

part of reach 3 and in reach 4, and dissolved selenium 

in reach 4. In addition, figure 10 indicates that unionized ammonia, nitrite, and dissolved manganese 

have localized exceedances in reach 3 downstream 

from station 5500 and that these exceedances attenuate 

downstream. Figures 9 and 10 indicate a tendency for 

fluoride to exceed standards in reach 2 that remains 

through the rest of the system, although it does 

attenuate.

The percentages for exceedances listed in 

table 13 also can be used to make general and qualitative observations concerning temporal trends. The 

side-by-side comparisons for many water-quality 

properties and constituents for the two evaluation 

periods shown in table 13 indicate that, for cases 

where pairs were available, the percentage of exceedance decreased 51 out of 66 times, or about 77 percent, 

from the first evaluation period to the second. 

SUMMARY OF MONOTONIC TRENDS 

IN WATER QUALITY

The presence or absence of monotonic trends 

was tested to provide some quantitative evaluation 

of temporal change within the system. The tests 

were made for the period of October 1987 through 

September 1997.

Methods Used to Evaluate Monotonic 

Trends

A nonparametric test was selected to evaluate 

monotonic trends. Nonparametric tests do not involve 

assumptions about normality required for parametric 

tests and also are robust to outliers and do not present 

computational problems when dealing with censored 

values.

The test selected for use in this report is known 

as Sen’s test (Gibbons, 1994). The test evaluates trends 

by computing a slope between all possible pairs of 

data for a given constituent, ranking the resultant 

series of slopes, and then assigning the median value 

of the ranked series as the representative slope for the 

entire series of measurements.

To assign confidence, a nonparametric variance 

is calculated and used to define confidence intervals. If 

the hypothesis is that there is no slope, and the sign of 

computed slopes changes or remains zero within the 

defined interval, then the hypothesis that there is no 

slope is accepted. If the sign of the computed slopes 

remains the same, then the hypothesis that there is no 

slope is rejected and one-sided methods are used to 

test for direction at the desired confidence. The reader 

is referred to Gibbons (1994) for additional details 

concerning the mechanics of Sen’s test.

All tests in this report were made at the 

95-percent confidence interval. A seasonal adjustment was made as described in the “Seasons” section. 

A positive slope was interpreted as an upward monotonic trend, and a negative monotonic slope was interpreted as a downward trend. Only the direction of 

trend is considered in this report.

Seasons

Many of the water-quality properties and 

constituents addressed by this report typically demonstrate seasonal variations. To address potential seasonality in the study area, multiyear records of daily 

values for flow, water temperature, specific conductance, and dissolved oxygen for several stations in the 

system were evaluated. In this evaluation, the mean 

of all values, for a given day in the series of 1-year 

periods, was plotted. The results for station 5530 are 

shown in figure 11; these results have been used to 

define three sets of conditions for the seasons used in 

this report (table 14). Perhaps most prominent is 

increased flow during the period from about April 15 

through June. This period is sometimes generally 

called spring runoff and is associated with snowmelt 

processes in the headwater portions of the system. The 

influx of water derived from snowmelt, which is relatively low in dissolved solids, also lowers specific 

conductance.

Following spring runoff, flow recedes to 

a base of steady flows punctuated by short periods 

of precipitation-derived runoff. During this second 

period, from the beginning of July through about 

the middle of September, stream temperatures are 

relatively high, dissolved oxygen levels are relatively 

low, and specific conductance is higher than in the 

first period. 
SUMMARY OF MONOTONIC TRENDS IN WATER QUALITY 31 Figure 11. Seasonal variation of water-quality properties at station 5530.
32 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

For the remainder of the year, from 

September 15 through April 15, flow conditions 

were similar to those in the second period; however, 

stream temperatures decreased and dissolved oxygen 

levels were relatively high. These three seasons were 

evaluated independently. To adjust for these seasons, 

all values for each annual given season were aggregated and represented by their mean; Sen’s test was 

applied to these means.

Discussion of Monotonic Trends

Figure 12 portrays the results from trend tests. 

The reader should note that, for water-quality properties or constituents that do not have samples for the 

same season for at least 3 years, the results will be 

shown as “too few,” even though there may be 

several samples.

The figure indicates that many water-quality 

properties and constituents do not have monotonic 

trends that can be identified with 95-percent confidence. The figure also indicates that when trends are 

detected, they are usually negative, or downward, 

monotonic trends. The results of the trend tests permit 

additional general observations regarding cases where 

monotonic trends were detected with 95-percent confidence. Some of these observations are briefly 

discussed here.

When downward or upward trends for a 

given water-quality property or constituent are 

detected, they are generally local; that is, they do not 

occur through the entire system. For instance, many 

constituents, including most nutrients and many minor 

elements, showed downward trends downstream from 

station 5500. In addition, detectable monotonic trends 

are not always the same for all three seasons. For 

instance, figure 12 indicates that, for stations 5500 

through 6300, orthophosphorus tends to have a downward trend for periods other than spring runoff 

(season 1). 

The station with the most upward trends 

was station 3747 where ammonia nitrogen and both 

dissolved and total manganese showed upward trends 

for two seasons, or most of the year. The station with 

the most downward trends was station 5530, downstream from station 5500, where many nutrients and 

minor elements showed downward trends. 

Summary of Monotonic Trends for 

Regulated Water-Quality Properties 

and Constituents

Some of the most prominent trends for waterquality properties and constituents occurred downstream from station 5500 at station 5530 where nutrients, such as ammonia nitrogen, un-ionized ammonia, 

total nitrogen, and orthophosphorus, all showed downward monotonic trends, mostly at times other than 

spring runoff. It is likely that advanced wastewatertreatment procedures designed to control concentrations of nitrogen-related compounds implemented by 

Colorado Springs Utilities are related to some of these 

downward trends. Minor elements such as chromium, 

copper, lead, nickel, and zinc also had decreasing 

monotonic trends downstream from station 5500 at 

station 5530, again mostly at times other than spring 

runoff. During periods of low flow in the winter 

(season 3), fluoride showed a tendency to increase 

at station 5530. 

Table 14. Characteristics of seasons defined and used for trend tests

-------------------------------------------------------------------------- Status of distinctive characteristics --------------------------------------------- Season Specific Stream Dissolved

number Periods included Flow conductance temperature oxygen

-------------------------------------------------------------------------- 1 April 15 through high low variable variable

June 30

2 July 1 through low high high low

September 15

3 September 16 low high low high

through April 14 --------------------------------------------------------------------------
SUMMARY OF MONOTONIC TRENDS IN WATER QUALITY 33 Figure 12. Summary of nonparametric monotonic trends for samples from Fountain and Monument Creeks for the period Octo

September 1997.
34 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

SUMMARY

Samples analyzed for water-quality properties 

and constituents have been collected at 11 stations on 

Fountain and Monument Creeks for many years. From 

October 1987 through September 1997, most samples 

were collected at about a monthly interval between the 

hours of about 7 a.m. and 4 p.m. All intervals of flow 

defined in a simple flow-duration analysis were evenly 

represented in the long term. For shorter time periods, 

most intervals are represented; however, there was a 

tendency for some intervals of flow to be sampled 

more than others.

Statistical summaries of these data indicate that 

some water-quality properties and constituents such as 

flow, specific conductance, most major ions, alkalinity 

and hardness, generally showed steady increases 

through the system. Some properties and constituents 

showed local changes in their values, some increasing 

and some decreasing. The pH and dissolved oxygen 

content of water decreased downstream from 

station 5500. Nitrogen ammonia, un-ionized ammonia, 

orthophosphorus, and 5-day biochemical oxygen 

demand, as well as some minor elements, all increased 

downstream from station 5500. 

In-stream regulatory standards were exceeded 

for some water-quality properties and constituents. 

Exceedances for sulfate, un-ionized ammonia, and 

selenium occurred locally, mostly in the lower parts of 

the system. Fecal coliform and total iron exceedances 

were widespread throughout the system. Simple 

comparison of incidence rates from one period to 

another indicates that many rates of incidence have 

decreased. 

A nonparametric test to detect monotonic trends 

that was applied to identified seasons indicates that 

there were many water-quality properties and constituents for which monotonic trends could not be identified with 95-percent confidence. For cases when 

trends were identified, most were negative or downward. In addition, detected trends sometimes were 

local and did not always occur in all of the seasons. 

In addition, many regulated constituents showed a 

tendency to have downward trends.

REFERENCES

Colorado Department of Health and Public Environment, 

1998, Regulation No. 32, Classification and numeric 

standards for Arkansas River basin: Colorado Department of Public Health and Environment, Water Quality 

Control Commission, variously paged.

Edelmann, P.F., 1990, Water quality of Fountain and Monument Creeks, south-central Colorado, with emphasis 

on relation of water quality to stream classifications: 

U.S. Geological Survey Water-Resources Investigations Report 88–4132, 99 p. 

Gibbons, R.D., 1994, Statistical methods for groundwater 

monitoring: New York, John Wiley and Sons, 286 p. 

Ruddy, B.C., 1993, Water-quality variations and trends 

in Monument and Fountain Creeks, El Paso and 

Pueblo Counties, Colorado, water years 1976–1988: 

U.S. Geological Survey-Resources Investigations 

Report 91–4176, 66 p.

U.S. Environmental Protection Agency, 1987, Quality 

criteria for water 1986 [update 2]: U.S. Environmental 

Protection Agency, Office of Water Regulations and 

Standards, EPA Report 440/5–86–001, variously 

paginated.
APPENDIX
APPENDIX 37 Figure A1. Correlation among log-transformed water-quality properties and constituents at station 3700, for the period October 198

September 1997.
38 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure A2. Correlation among log-transformed water-quality properties and constituents at station 3747, for the period October 19September 1997.
APPENDIX 39 Figure A3. Correlation among log-transformed water-quality properties and constituents at station 3780, for the period October 198

September 1997.
40 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure A4. Correlation among log-transformed water-quality properties and constituents at station 4000, for the period October 19

September 1997.
APPENDIX 41 Figure A5. Correlation among log-transformed water-quality properties and constituents at station 4905, for the period October 19

September 1997.
42 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure A6. Correlation among log-transformed water-quality properties and constituents at station 5500, for the period October 19

September 1997.
APPENDIX 43 Figure A7. Correlation among log-transformed water-quality properties and constituents at station 5530, for the period October 1

September 1997.
44 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure A8. Correlation among log-transformed water-quality properties and constituents at station 5533, for the period October 19

September 1997.
APPENDIX 45 Figure A9. Correlation among log-transformed water-quality properties and constituents at station 5905, for the period October 19

September 1997.
46 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Figure A10. Correlation among log-transformed water-quality properties and constituents at station 6300, for the period October 1September 1997.
APPENDIX 47 Figure A11. Correlation among log-transformed water-quality properties and constituents at station 6500, for the period October 19

September 1997.
48 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A1. Univariate statistics for water-quality data collected for station 3700, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 144 na 13.5 9.45 10.7 13.6 6.08 19.0 2.60 87.0 na SPECIFIC COND. CONDF US/CM @ 25C 121 na 335 329 322 94.7 232 443 176 649 na SPECIFIC COND. CONDL MICROSIEMENS/C 66 na 347 335 335 91.8 242 435 172 604 na PH, WH, FIELD PH STANDARD UNITS 67 na 8.27 8.30 8.27 0.17 8.10 8.40 7.90 9.00 na WATER TEMP. TEMP DEGREES 123 na 8.43 8.50 na 5.48 1.80 15.0 0 22.0 na OXYGEN DISS. DO MG/L 67 na 9.54 9.40 9.44 1.39 7.90 11.3 7.10 11.9 na OXYGEN DIS. % %DO % OF SATURATION 65 na 98.5 98.0 98.4 2.91 96.0 101 91.0 106 na BOD 5-DAY BOD5 MG/L 58 3.45 1.11 0.90 0.85 0.97 0.40 1.69 0.10 5.70 0COLIFORM FECAL FCOL COLS./100 ML 61 4.92 1100 365 222 1990 16.0 2250 2.00 9300 45FECAL STRPT FSTRP COLS./100 ML 60 na 1310 390 398 2640 52.6 1860 7.00 15000 na CALCIUM DISS. CA MG/L AS CA 46 na 35.6 34.5 34.0 10.6 25.0 47.0 17.0 65.0 na MAGNESIUM DISS MG MG/L AS MG 46 na 7.04 6.70 6.65 2.38 4.50 9.90 3.20 14.0 na ALKALINITY ALK MG/L AS CACO3 60 na 121 120 116 35.0 84.0 160 58.0 227 na SULFATE DISS. SO4 MG/L AS SO4 62 na 16.5 16.0 15.8 4.62 11.0 21.0 7.30 27.0 na CHLORIDE DISS. CL MG/L AS CL 64 na 18.1 16.5 16.7 8.59 11.0 23.3 7.10 66.0 na FLUORIDE DISS. F MG/L AS F 25 na 2.57 2.60 2.55 0.31 2.40 2.71 1.50 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 46 na 118 115 112 36.7 81.0 160 58.0 220 na RESIDUE TOTAL RES MG/L 60 6.67 28.7 13.0 15.6 35.6 5.00 54.9 2.00 179 1NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 62 32.3 0.41 0.30 0.36 0.25 0.20 0.60 0.20 1.40 0PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 2 100 na na na na na na na na 1ARSENIC TOTAL AS T UG/L AS AS 1 100 na na na na na na na na 1BARIUM DISS. BA D UG/L AS BA 2 na 72.0 72.0 70.4 21.2 na na 57.0 87.0 na BARIUM TOTAL BA T UG/L AS BA 2 50.0 100 100 100 na na na 100 100 100 BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 38 94.7 1.00 1.00 1.00 0 na na 1.00 1.00 1CADMIUM TOTAL CD T UG/L AS CD 61 90.2 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 1CHROMIUM DISS. CR D UG/L AS CR 62 88.7 2.00 1.00 1.46 2.24 1.00 6.00 1.00 7.00 1CHROMIUM HEX. CR6 UG/L AS CR 36 86.1 2.60 2.00 2.09 1.82 na na 1.00 5.00 1CHROMIUM TOTAL CR T UG/L AS CR 37 54.1 1.76 1.00 1.51 1.25 1.00 2.30 1.00 6.00 1COPPER DISS. CU D UG/L AS CU 38 31.6 1.35 1.00 1.26 0.56 1.00 2.00 1.00 3.00 2COPPER TOTAL CU T UG/L AS CU 62 6.45 3.45 3.00 2.97 1.94 2.00 6.00 1.00 11.0 1IRON TOTAL FE T UG/L AS FE 62 na 1260 640 724 1890 290 2360 120 12000 na IRON DISS. FE D UG/L AS FE 62 3.23 58.9 37.5 39.0 102 19.2 81.7 5.00 790 1LEAD DISS. PB D UG/L AS PB 38 86.8 1.60 1.00 1.32 1.34 na na 1.00 4.00 1LEAD TOTAL PB T UG/L AS PB 61 36.1 4.49 3.00 3.01 5.86 1.00 7.00 1.00 35.0 4MANGANESE DISS MN D UG/L AS MN 62 na 40.4 40.0 36.3 20.9 20.0 50.0 10 160 na MANGANESE TOT MD T UG/L AS MN 62 na 100 80.0 86.2 74.6 50.0 157 40.0 500 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 2 100 na na na na na na na na 1MOLYBDENUM TOT MO T UG/L AS MO 2 na 4.50 4.50 4.24 2.12 na na 3.00 6.00 na NICKEL DISS. NI D UG/L AS NI 38 57.9 1.13 1.00 1.09 0.34 1.00 1.45 1.00 2.00 1NICKEL TOTAL NI T UG/L AS NI 38 31.6 2.31 2.00 2.08 1.16 1.00 3.00 1.00 6.00 1SILVER DISS. AG D UG/L AS AG 2 50.0 2.00 2.00 2.00 na na na 2.00 2.00 1SILVER TOTAL AG T UG/L AS AG 2 100 na na na na na na na na 1SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 38 23.7 7.45 6.00 6.71 3.65 4.00 12.5 3.00 16.0 3ZINC TOTAL ZN T UG/L AS ZN 62 29.0 30.5 20.0 22.7 36.8 10 40.0 10 240 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 2 100 na na na na na na na na 0SUSP SED SSED MG/L 80 na 665 42.7 63.0 2250 11.0 398 2.90 11600 na SUSP-SIEVE SIEV % 32 na 74.0 78.0 72.3 15.2 53.0 89.1 41.0 98.3 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 49

Table A2. Univariate statistics for water-quality data collected for station 3747, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 82 1.22 3.36 1.40 1.44 5.93 0.40 6.00 0.20 40.0 SPECIFIC COND. CONDF US/CM @ 25C 73 na 154 157 149 38.0 105 196 75.0 235 nSPECIFIC COND. CONDL MICROSIEMENS/C 65 na 156 162 151 36.0 108 190 76.0 231 nPH, WH, FIELD PH STANDARD UNITS 64 na 7.96 8.00 7.96 0.19 7.80 8.20 7.50 8.40 nWATER TEMP. TEMP DEGREES 82 na 9.55 8.00 na 7.31 1.50 19.0 0 26.5 nOXYGEN DISS. DO MG/L 64 na 9.02 9.00 8.91 1.40 7.48 10.8 6.40 11.6 nOXYGEN DIS. % %DO % OF SATURATION 55 na 99.1 99.0 99.0 3.23 96.0 103 92.0 108 nBOD 5-DAY BOD5 MG/L 58 1.72 0.54 0.50 0.45 0.32 0.20 0.80 0.10 2.10 COLIFORM FECAL FCOL COLS./100 ML 62 14.5 29.8 8.00 7.98 57.4 1.00 59.9 1.00 240 FECAL STRPT FSTRP COLS./100 ML 64 na 117 66.5 65.7 145 22.8 263 3.00 950 nCALCIUM DISS. CA MG/L AS CA 44 na 18.6 18.0 18.1 4.51 13.8 23.3 8.80 29.0 nMAGNESIUM DISS MG MG/L AS MG 44 na 3.28 3.45 3.13 0.91 2.10 4.13 1.20 5.10 nALKALINITY ALK MG/L AS CACO3 60 na 59.2 61.0 56.6 16.6 37.0 74.9 26.0 93.0 nSULFATE DISS. SO4 MG/L AS SO4 59 na 10.5 10 10.0 3.10 7.20 13.0 4.00 20.0 nCHLORIDE DISS. CL MG/L AS CL 62 na 3.12 3.15 2.72 1.49 1.49 4.26 0.20 8.30 nFLUORIDE DISS. F MG/L AS F 25 na 1.65 1.70 1.64 0.20 1.50 1.80 1.00 2.00 nHARDNESS TOTAL HARD MG/L AS CAO3 44 na 60.0 58.5 58.0 14.9 43.3 74.8 27.0 93.0 nRESIDUE TOTAL RES MG/L 60 23.3 16.4 10 9.82 18.3 3.00 28.8 1.00 99.0 NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na nUN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na nNO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 62 54.8 0.29 0.30 0.28 0.10 0.20 0.40 0.20 0.60 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 35 100 na na na na na na na na CADMIUM TOTAL CD T UG/L AS CD 59 88.1 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 CHROMIUM DISS. CR D UG/L AS CR 59 88.1 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 CHROMIUM HEX. CR6 UG/L AS CR 36 88.9 1.25 1.00 1.19 0.50 na na 1.00 2.00 CHROMIUM TOTAL CR T UG/L AS CR 35 68.6 1.27 1.00 1.21 0.47 1.00 2.00 1.00 2.00 COPPER DISS. CU D UG/L AS CU 36 47.2 1.63 1.00 1.26 1.89 1.00 3.00 1.00 9.00 COPPER TOTAL CU T UG/L AS CU 60 16.7 2.68 2.00 2.20 2.14 1.00 4.35 1.00 14.0 IRON TOTAL FE T UG/L AS FE 60 na 641 475 495 679 250 871 190 4800 nIRON DISS. FE D UG/L AS FE 60 na 96.1 80.0 72.7 66.7 31.0 180 8.00 270 nLEAD DISS. PB D UG/L AS PB 36 69.4 1.18 1.00 1.13 0.41 1.00 2.00 1.00 2.00 LEAD TOTAL PB T UG/L AS PB 60 48.3 1.84 2.00 1.63 1.04 1.00 2.20 1.00 5.00 MANGANESE DISS MN D UG/L AS MN 60 1.67 49.6 43.0 38.8 35.6 16.0 80.0 7.00 180 MANGANESE TOT MD T UG/L AS MN 60 na 71.2 60.0 61.6 40.3 40.0 117 20.0 200 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 36 66.7 1.08 1.00 1.06 0.29 1.00 1.05 1.00 2.00 NICKEL TOTAL NI T UG/L AS NI 36 47.2 2.37 1.00 1.72 2.50 1.00 4.00 1.00 10 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 36 22.2 8.65 7.50 7.62 4.88 4.00 13.3 4.00 22.0 ZINC TOTAL ZN T UG/L AS ZN 60 65.0 28.9 10 18.2 40.5 10 47.0 10 180 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 14 na 23.3 17.0 17.4 21.9 8.25 34.8 5.00 91.0 nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
50 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A3. Univariate statistics for water-quality data collected for station 3780, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 115 na 10.5 5.00 5.52 13.6 1.64 22.4 0.39 74.0 na SPECIFIC COND. CONDF US/CM @ 25C 111 na 272 275 257 86.3 162 368 121 474 na SPECIFIC COND. CONDL MICROSIEMENS/C 65 na 282 285 267 87.9 167 376 123 501 na PH, WH, FIELD PH STANDARD UNITS 64 na 8.13 8.10 8.13 0.29 7.88 8.40 7.40 8.90 na WATER TEMP. TEMP DEGREES 114 na 11.0 10 na 8.29 1.00 21.3 0 29.0 na OXYGEN DISS. DO MG/L 65 na 9.40 9.60 9.28 1.49 7.80 11.0 6.70 11.8 na OXYGEN DIS. % %DO % OF SATURATION 62 na 104 102 104 8.07 97.0 114 87.0 128 na BOD 5-DAY BOD5 MG/L 56 1.79 2.91 2.20 2.29 2.04 1.04 5.60 0.40 8.40 6COLIFORM FECAL FCOL COLS./100 ML 63 15.9 85.2 32.0 23.5 225 3.10 129 1.00 1600 2FECAL STRPT FSTRP COLS./100 ML 63 na 161 82.0 74.4 251 16.0 278 2.00 1600 na CALCIUM DISS. CA MG/L AS CA 44 na 26.4 28.0 25.8 5.23 18.8 32.0 14.0 34.0 na MAGNESIUM DISS MG MG/L AS MG 44 na 4.42 4.50 4.29 1.00 3.38 5.45 2.00 6.30 na ALKALINITY ALK MG/L AS CACO3 60 na 73.6 72.0 71.1 19.0 51.2 92.0 37.0 118 na SULFATE DISS. SO4 MG/L AS SO4 60 na 25.8 25.0 23.3 14.2 13.2 37.0 10 110 na CHLORIDE DISS. CL MG/L AS CL 62 na 16.2 15.0 14.1 8.11 7.78 25.0 3.70 40.0 na FLUORIDE DISS. F MG/L AS F 25 na 1.35 1.40 1.33 0.24 1.00 1.60 0.80 1.70 na HARDNESS TOTAL HARD MG/L AS CAO3 44 na 84.0 88.0 82.0 17.2 59.8 100 43.0 110 na RESIDUE TOTAL RES MG/L 60 5.00 27.9 14.0 14.9 42.8 6.70 39.1 1.00 243 1NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 62 1.61 1.75 1.00 1.12 1.95 0.43 3.49 0.30 9.30 0PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 36 88.9 1.75 2.00 1.68 0.50 na na 1.00 2.00 1CADMIUM TOTAL CD T UG/L AS CD 59 94.9 1.00 1.00 1.00 0 na na 1.00 1.00 1CHROMIUM DISS. CR D UG/L AS CR 60 86.7 1.63 1.00 1.25 1.77 1.00 4.25 1.00 6.00 1CHROMIUM HEX. CR6 UG/L AS CR 36 80.6 3.00 3.00 2.48 1.83 1.00 5.60 1.00 6.00 1CHROMIUM TOTAL CR T UG/L AS CR 35 57.1 1.20 1.00 1.15 0.41 1.00 2.00 1.00 2.00 1COPPER DISS. CU D UG/L AS CU 36 13.9 1.71 2.00 1.53 0.90 1.00 2.20 1.00 5.00 1COPPER TOTAL CU T UG/L AS CU 60 8.33 3.69 3.00 3.22 1.97 2.00 6.00 1.00 10 1IRON TOTAL FE T UG/L AS FE 60 na 1040 745 845 984 562 1100 310 5900 na IRON DISS. FE D UG/L AS FE 60 1.67 86.9 72.0 73.5 53.2 36.0 130 19.0 260 1LEAD DISS. PB D UG/L AS PB 36 75.0 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 1LEAD TOTAL PB T UG/L AS PB 60 40.0 2.61 2.00 1.89 3.80 1.00 3.00 1.00 24.0 4MANGANESE DISS MN D UG/L AS MN 60 na 79.9 70.5 70.2 44.2 40.0 130 20.0 250 na MANGANESE TOT MD T UG/L AS MN 60 na 128 110 117 54.9 80.0 199 60.0 290 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 36 22.2 3.04 2.00 2.52 2.13 1.35 5.30 1.00 10 1NICKEL TOTAL NI T UG/L AS NI 36 8.33 3.58 3.00 3.09 1.90 2.00 6.00 1.00 9.00 1SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 35 8.57 6.88 6.00 6.38 2.68 3.99 10 3.00 14.0 3ZINC TOTAL ZN T UG/L AS ZN 60 48.3 18.7 10 15.5 13.4 10 32.0 10 60.0 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 16 na 50.5 43.0 35.2 50.3 15.3 82.7 4.00 213 na SUSP-SIEVE SIEV % 5 na 69.4 75.0 66.6 20.5 na na 39.2 88.8 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 51

Table A4. Univariate statistics for water-quality data collected for station 4000, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 125 na 28.6 22.4 23.6 20.9 12.9 43.3 7.42 127 nSPECIFIC COND. CONDF US/CM @ 25C 120 na 388 405 373 97.5 282 484 104 577 nSPECIFIC COND. CONDL MICROSIEMENS/C 65 na 408 428 396 91.7 296 490 184 584 nPH, WH, FIELD PH STANDARD UNITS 63 na 8.32 8.30 8.32 0.20 8.10 8.50 7.70 8.80 nWATER TEMP. TEMP DEGREES 122 na 14.0 15.3 na 8.78 2.73 24.0 0 28.5 nOXYGEN DISS. DO MG/L 65 na 8.47 8.20 8.28 1.80 6.50 10.8 5.80 11.7 nOXYGEN DIS. % %DO % OF SATURATION 63 na 98.2 97.0 98.1 4.44 94.0 103 89.0 112 nBOD 5-DAY BOD5 MG/L 58 na 2.00 1.20 1.40 2.23 0.70 3.00 0.30 13.0 nCOLIFORM FECAL FCOL COLS./100 ML 62 8.06 240 66.0 70.0 419 10 513 3.00 2500 1FECAL STRPT FSTRP COLS./100 ML 63 na 804 240 226 3510 67.6 660 16.0 28000 nCALCIUM DISS. CA MG/L AS CA 44 na 49.7 52.0 48.3 11.1 35.0 62.3 21.0 67.0 nMAGNESIUM DISS MG MG/L AS MG 44 na 6.50 6.70 6.34 1.34 4.60 7.93 2.80 8.60 nALKALINITY ALK MG/L AS CACO3 60 na 107 111 104 22.7 77.5 131 51.0 146 nSULFATE DISS. SO4 MG/L AS SO4 60 na 59.6 62.5 57.1 16.2 38.2 77.6 27.0 87.0 nCHLORIDE DISS. CL MG/L AS CL 62 na 17.3 16.0 15.8 8.99 10.5 21.6 6.10 72.0 nFLUORIDE DISS. F MG/L AS F 25 na 1.32 1.30 1.24 0.44 0.80 1.91 0.50 2.10 nHARDNESS TOTAL HARD MG/L AS CAO3 44 na 152 160 147 33.2 110 190 64.0 200 nRESIDUE TOTAL RES MG/L 59 1.69 268 144 144 512 67.9 405 1.00 3750 3NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na nUN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na nNO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 62 3.23 0.73 0.50 0.57 0.58 0.30 1.30 0.20 2.70 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 36 94.4 1.00 1.00 1.00 0 na na 1.00 1.00 CADMIUM TOTAL CD T UG/L AS CD 59 93.2 1.25 1.00 1.19 0.50 na na 1.00 2.00 CHROMIUM DISS. CR D UG/L AS CR 60 86.7 1.38 1.00 1.25 0.74 1.00 2.65 1.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 36 86.1 3.60 4.00 3.13 1.67 na na 1.00 5.00 CHROMIUM TOTAL CR T UG/L AS CR 35 37.1 4.68 3.00 3.32 6.14 2.00 6.00 1.00 31.0 COPPER DISS. CU D UG/L AS CU 36 30.6 1.28 1.00 1.21 0.46 1.00 2.00 1.00 2.00 COPPER TOTAL CU T UG/L AS CU 60 1.67 7.25 6.00 5.64 7.39 3.00 9.00 2.00 52.0 IRON TOTAL FE T UG/L AS FE 60 na 4500 3350 3280 4280 1420 7860 270 25000 nIRON DISS. FE D UG/L AS FE 60 15.0 93.9 11.0 14.9 476 6.00 30.4 4.00 3400 1LEAD DISS. PB D UG/L AS PB 36 86.1 1.00 1.00 1.00 0 na na 1.00 1.00 LEAD TOTAL PB T UG/L AS PB 59 15.3 9.60 5.00 6.25 16.9 3.00 14.0 2.00 120 MANGANESE DISS MN D UG/L AS MN 60 8.33 22.1 19.0 16.7 22.0 6.40 32.8 4.00 160 MANGANESE TOT MD T UG/L AS MN 60 na 160 100 117 196 61.5 230 30.0 1400 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 36 25.0 1.48 1.00 1.38 0.58 1.00 2.00 1.00 3.00 NICKEL TOTAL NI T UG/L AS NI 36 8.33 4.88 4.00 3.66 5.93 2.00 6.90 1.00 36.0 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 36 41.7 6.24 6.00 5.73 2.70 4.00 9.00 3.00 13.0 ZINC TOTAL ZN T UG/L AS ZN 60 11.7 46.2 30.0 31.8 78.7 20.0 69.0 10 580 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 17 na 744 467 502 700 182 1730 98.0 2660 nSUSP-SIEVE SIEV % 13 na 52.4 61.1 49.6 16.0 29.7 67.3 25.4 69.1 n------------------------------------------------------------------------------------------------------------------------------------------------------
52 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A5. Univariate statistics for water-quality data collected for station 4905, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 61 na 32.8 24.0 25.3 34.4 15.3 45.7 5.90 222 na SPECIFIC COND. CONDF US/CM @ 25C 59 na 588 602 567 148 391 737 233 949 na SPECIFIC COND. CONDL MICROSIEMENS/C 60 na 588 605 569 140 422 717 242 925 na PH, WH, FIELD PH STANDARD UNITS 59 na 8.29 8.40 8.29 0.25 8.10 8.50 7.20 8.60 na WATER TEMP. TEMP DEGREES 60 na 14.3 16.0 na 9.80 0.50 24.0 0 31.0 na OXYGEN DISS. DO MG/L 59 na 8.46 8.20 8.24 2.01 6.20 11.2 5.70 13.4 na OXYGEN DIS. % %DO % OF SATURATION 58 na 99.0 98.0 98.9 5.06 95.0 104 82.0 114 na BOD 5-DAY BOD5 MG/L 58 na 2.77 1.50 1.72 3.24 0.80 5.01 0.20 15.0 na COLIFORM FECAL FCOL COLS./100 ML 57 5.26 3450 320 416 10600 40.0 4430 5.00 70000 240 FECAL STRPT FSTRP COLS./100 ML 57 1.75 3320 820 855 7600 158 7900 47.0 50000 80CALCIUM DISS. CA MG/L AS CA 44 na 67.4 69.5 65.2 16.4 47.5 86.3 26.0 98.0 na MAGNESIUM DISS MG MG/L AS MG 44 na 11.6 12.0 11.1 3.25 7.80 15.0 3.90 19.0 na ALKALINITY ALK MG/L AS CACO3 61 na 133 134 129 27.2 101 165 63.0 183 na SULFATE DISS. SO4 MG/L AS SO4 61 na 119 120 113 36.5 77.9 160 38.0 210 na CHLORIDE DISS. CL MG/L AS CL 58 na 21.9 20.0 19.8 13.7 12.9 25.2 8.00 110 na FLUORIDE DISS. F MG/L AS F 26 na 1.43 1.35 1.39 0.33 1.10 1.80 0.80 2.00 na HARDNESS TOTAL HARD MG/L AS CAO3 44 na 216 220 209 54.0 150 280 81.0 310 na RESIDUE TOTAL RES MG/L 61 na 273 153 168 354 70.9 510 11.0 2490 na NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 60 na 0.70 0.60 0.60 0.38 0.30 1.00 0.20 1.90 na PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 37 83.8 1.17 1.00 1.12 0.41 1.00 1.95 1.00 2.00 1CADMIUM TOTAL CD T UG/L AS CD 60 91.7 1.20 1.00 1.15 0.45 na na 1.00 2.00 1CHROMIUM DISS. CR D UG/L AS CR 60 80.0 1.42 1.00 1.30 0.67 1.00 2.05 1.00 3.00 1CHROMIUM HEX. CR6 UG/L AS CR 37 83.8 1.83 1.00 1.47 1.60 1.00 4.85 1.00 5.00 1CHROMIUM TOTAL CR T UG/L AS CR 36 19.4 6.52 5.00 4.74 6.01 2.00 11.5 1.00 28.0 1COPPER DISS. CU D UG/L AS CU 37 13.5 1.50 1.00 1.39 0.62 1.00 2.00 1.00 3.00 1COPPER TOTAL CU T UG/L AS CU 61 na 9.69 8.00 7.93 6.95 4.00 14.0 2.00 39.0 na IRON TOTAL FE T UG/L AS FE 61 1.64 7220 3800 4180 8900 1620 12900 160 50000 1IRON DISS. FE D UG/L AS FE 60 15.0 17.3 10 12.5 19.9 6.00 21.8 4.00 120 7LEAD DISS. PB D UG/L AS PB 37 86.5 2.80 1.00 1.58 4.02 na na 1.00 10 1LEAD TOTAL PB T UG/L AS PB 60 10 13.0 8.00 8.53 14.0 3.00 19.5 1.00 64.0 5MANGANESE DISS MN D UG/L AS MN 60 26.7 5.00 3.00 3.35 5.62 1.00 8.50 1.00 30.0 7MANGANESE TOT MD T UG/L AS MN 61 na 199 110 123 216 50.0 391 10 980 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 37 27.0 1.63 1.00 1.47 0.88 1.00 2.00 1.00 5.00 1NICKEL TOTAL NI T UG/L AS NI 37 na 7.11 5.00 5.12 6.55 2.00 12.9 1.00 34.0 na SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 37 24.3 7.36 6.00 6.55 4.41 4.00 11.3 4.00 25.0 3ZINC TOTAL ZN T UG/L AS ZN 61 6.56 66.8 40.0 44.1 70.9 20.0 129 10 360 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 15 na 878 409 476 1440 148 1480 105 5820 na SUSP-SIEVE SIEV % 13 na 60.8 65.9 58.0 18.2 35.5 78.9 33.9 83.8 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 53

Table A6. Univariate statistics for water-quality data collected for station 5500, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 193 na 92.6 35.5 44.4 232 18.8 97.9 8.63 2170 nSPECIFIC COND. CONDF US/CM @ 25C 157 na 605 610 575 186 401 781 218 1300 nSPECIFIC COND. CONDL MICROSIEMENS/C 63 na 613 645 580 201 385 764 244 1330 nPH, WH, FIELD PH STANDARD UNITS 64 na 8.16 8.20 8.16 0.23 8.00 8.30 7.09 8.40 nWATER TEMP. TEMP DEGREES 163 na 12.9 13.5 na 7.96 2.50 21.7 0 28.0 nOXYGEN DISS. DO MG/L 64 na 8.85 8.75 8.71 1.56 6.90 10.8 6.20 11.7 nOXYGEN DIS. % %DO % OF SATURATION 57 na 101 99.0 101 6.40 95.0 107 90.0 130 nBOD 5-DAY BOD5 MG/L 57 1.75 2.05 1.40 1.35 3.21 0.71 2.60 0.20 22.0 COLIFORM FECAL FCOL COLS./100 ML 57 na 3590 530 531 9580 35.7 5830 12.0 64000 nFECAL STRPT FSTRP COLS./100 ML 57 na 3240 660 809 9550 197 3920 50.0 66000 nCALCIUM DISS. CA MG/L AS CA 49 na 63.0 65.0 60.2 18.6 41.5 81.5 26.0 110 nMAGNESIUM DISS MG MG/L AS MG 49 na 13.8 14.0 12.9 4.89 8.35 19.0 4.60 25.0 nALKALINITY ALK MG/L AS CACO3 65 na 133 138 129 32.2 94.7 164 65.0 210 nSULFATE DISS. SO4 MG/L AS SO4 65 na 133 140 120 52.0 70.8 180 14.0 250 nCHLORIDE DISS. CL MG/L AS CL 62 na 25.6 21.0 20.8 32.2 12.0 29.6 8.70 260 nFLUORIDE DISS. F MG/L AS F 30 na 2.03 1.95 1.97 0.49 1.50 2.54 1.30 3.10 nHARDNESS TOTAL HARD MG/L AS CAO3 49 na 215 220 204 65.9 140 285 84.0 380 nRESIDUE TOTAL RES MG/L 60 na 157 92.5 103 161 37.1 299 14.0 821 nNITROGEN AMM TNH3 MG/L AS N 4 na 0.13 0.03 0.04 0.20 na na 0.01 0.43 nUN-IONIZED AMM NH3- MG/L AS NH3 4 na 0.002 0.002 na 0.003 na na 0 0.006 nNO2 + NO3 DISS NO23 MG/L AS N 4 na 2.00 2.05 1.97 0.39 na na 1.50 2.40 nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 60 8.33 0.63 0.50 0.53 0.42 0.30 0.96 0.20 2.30 PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 10 40.0 2.00 1.50 1.70 1.26 1.00 3.95 1.00 4.00 ARSENIC TOTAL AS T UG/L AS AS 6 33.3 1.00 1.00 1.00 0 na na 1.00 1.00 BARIUM DISS. BA D UG/L AS BA 4 na 47.3 47.5 47.0 5.68 na na 41.0 53.0 nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 9 na 70.0 60.0 67.1 22.4 50.0 105 50.0 110 nBORON TOTAL B T UG/L AS B 5 na 66.0 60.0 62.6 24.1 na na 40.0 100 nCADMIUM DISS. CD D UG/L AS CD 41 87.8 2.00 2.00 1.89 0.71 na na 1.00 3.00 CADMIUM TOTAL CD T UG/L AS CD 60 86.7 1.00 1.00 1.00 0 1.00 1.00 1.00 1.00 CHROMIUM DISS. CR D UG/L AS CR 65 83.1 1.27 1.00 1.21 0.47 1.00 2.00 1.00 2.00 CHROMIUM HEX. CR6 UG/L AS CR 37 83.8 1.50 1.00 1.35 0.84 1.00 2.95 1.00 3.00 CHROMIUM TOTAL CR T UG/L AS CR 36 25.0 3.93 3.00 2.91 4.36 1.20 4.80 1.00 22.0 COPPER DISS. CU D UG/L AS CU 41 24.4 1.81 2.00 1.65 0.79 1.00 3.00 1.00 4.00 COPPER TOTAL CU T UG/L AS CU 61 4.92 6.62 6.00 5.76 3.90 3.00 11.2 2.00 23.0 IRON TOTAL FE T UG/L AS FE 61 na 4920 2800 3120 6350 1300 8580 410 38000 nIRON DISS. FE D UG/L AS FE 65 13.8 71.4 10.5 14.8 242 5.00 34.5 3.00 1400 LEAD DISS. PB D UG/L AS PB 41 78.0 1.33 1.00 1.26 0.50 1.00 2.00 1.00 2.00 LEAD TOTAL PB T UG/L AS PB 60 11.7 11.4 7.00 7.57 13.5 3.00 21.0 2.00 75.0 MANGANESE DISS MN D UG/L AS MN 65 1.54 31.0 21.0 22.3 26.1 9.00 60.3 4.00 130 MANGANESE TOT MD T UG/L AS MN 61 na 171 120 136 148 80.0 264 30.0 850 nMERCURY DISS. HG D UG/L AS HG 4 75.0 0.50 0.50 0.50 na na na 0.50 0.50 MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 4 75.0 10 10 10 na na na 10 10 MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 40 47.5 1.57 2.00 1.49 0.51 1.00 2.00 1.00 2.00 NICKEL TOTAL NI T UG/L AS NI 37 2.70 4.14 3.00 3.32 3.06 1.55 6.00 1.00 17.0 SILVER DISS. AG D UG/L AS AG 4 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 4 na 5.00 4.50 4.86 1.41 na na 4.00 7.00 nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 41 17.1 13.6 7.00 8.79 23.5 4.25 15.8 3.00 140 ZINC TOTAL ZN T UG/L AS ZN 61 3.28 51.7 30.0 39.1 49.1 20.0 80.0 10 240 SULFIDE TOTAL H2S MG/L AS S 6 100 na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 6 100 na na na na na na na na SUSP SED SSED MG/L 81 na 1230 257 368 2500 101 2060 36.0 11500 nSUSP-SIEVE SIEV % 47 na 69.0 71.0 66.7 16.6 49.7 83.8 33.0 98.0 n------------------------------------------------------------------------------------------------------------------------------------------------------
54 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A7. Univariate statistics for water-quality data collected for station 5530, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 72 na 93.7 90.0 88.2 33.8 56.0 127 44.0 217 na SPECIFIC COND. CONDF US/CM @ 25C 79 na 794 836 779 146 619 897 335 1340 na SPECIFIC COND. CONDL MICROSIEMENS/C 62 na 759 794 744 145 589 859 335 1360 na PH, WH, FIELD PH STANDARD UNITS 65 na 7.77 7.80 7.77 0.15 7.64 7.90 7.30 8.00 na WATER TEMP. TEMP DEGREES 78 na 14.5 13.5 13.2 5.36 9.00 20.6 0.50 24.0 na OXYGEN DISS. DO MG/L 65 na 7.68 7.80 7.58 1.23 6.39 8.80 3.90 11.3 na OXYGEN DIS. % %DO % OF SATURATION 60 na 94.0 93.0 93.8 7.25 87.2 101 75.0 118 na BOD 5-DAY BOD5 MG/L 58 na 15.4 15.0 14.2 6.09 9.38 21.0 5.20 32.0 na COLIFORM FECAL FCOL COLS./100 ML 58 6.90 2320 600 654 6510 143 2600 26.0 45000 39FECAL STRPT FSTRP COLS./100 ML 59 na 1970 510 741 4020 240 3100 60.0 23000 na CALCIUM DISS. CA MG/L AS CA 47 na 50.0 52.0 49.6 6.34 43.0 55.0 29.0 62.0 na MAGNESIUM DISS MG MG/L AS MG 47 na 15.3 15.0 14.9 3.26 12.0 18.8 6.30 23.0 na ALKALINITY ALK MG/L AS CACO3 40 na 102 100 100 18.7 83.3 122 64.0 152 na SULFATE DISS. SO4 MG/L AS SO4 40 na 159 165 154 36.8 112 190 58.0 230 na CHLORIDE DISS. CL MG/L AS CL 37 na 43.5 40.0 38.3 33.5 25.0 51.0 15.0 230 na FLUORIDE DISS. F MG/L AS F 29 na 1.80 1.70 1.77 0.32 1.50 2.25 1.30 2.60 na HARDNESS TOTAL HARD MG/L AS CAO3 47 na 188 190 186 28.4 152 220 98.0 240 na RESIDUE TOTAL RES MG/L 60 na 98.7 57.5 62.8 136 29.8 139 5.00 920 na NITROGEN AMM TNH3 MG/L AS N 5 na 8.72 9.80 8.44 2.17 na na 4.90 10 na UN-IONIZED AMM NH3- MG/L AS NH3 4 na 0.14 0.14 0.13 0.05 na na 0.08 0.19 na NO2 + NO3 DISS NO23 MG/L AS N 5 na 2.01 2.20 1.85 0.82 na na 0.93 2.80 na NITROGEN,NO2 NIT MG/L AS N 1 na 0.02 0.02 0.02 na na na 0.02 0.02 na NITROGEN AMM+ TNIT MG/L AS N 59 na 11.3 11.0 10.4 4.85 6.50 14.0 3.20 37.0 na PHOSPHORUS O OPO4 MG/L AS P 1 na 2.90 2.90 2.90 na na na 2.90 2.90 na ARSENIC DISS. AS D UG/L AS AS 10 30.0 1.43 1.00 1.35 0.54 1.00 2.00 1.00 2.00 1ARSENIC TOTAL AS T UG/L AS AS 6 33.3 1.25 1.00 1.19 0.50 na na 1.00 2.00 1BARIUM DISS. BA D UG/L AS BA 4 na 44.5 37.5 42.1 18.2 na na 32.0 71.0 na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 8 na 154 140 150 35.8 114 207 100 210 na BORON TOTAL B T UG/L AS B 5 na 158 150 154 40.9 na na 110 220 na CADMIUM DISS. CD D UG/L AS CD 61 80.3 1.25 1.00 1.19 0.45 1.00 2.00 1.00 2.00 1CADMIUM TOTAL CD T UG/L AS CD 56 91.1 1.00 1.00 1.00 0 na na 1.00 1.00 1CHROMIUM DISS. CR D UG/L AS CR 61 32.8 2.95 2.00 2.10 3.83 1.00 3.70 1.00 24.0 1CHROMIUM HEX. CR6 UG/L AS CR 57 86.0 1.63 1.00 1.33 1.41 1.00 3.95 1.00 5.00 1CHROMIUM TOTAL CR T UG/L AS CR 56 16.1 5.15 4.00 3.77 5.02 2.00 8.80 1.00 29.0 1COPPER DISS. CU D UG/L AS CU 61 8.20 5.43 5.00 5.00 2.24 3.00 7.00 2.00 11.0 8COPPER TOTAL CU T UG/L AS CU 57 1.75 10.8 10 9.93 4.56 7.00 15.5 3.00 29.0 1IRON TOTAL FE T UG/L AS FE 57 na 2480 1500 1770 2500 859 3900 360 12000 na IRON DISS. FE D UG/L AS FE 41 na 46.4 45.0 43.6 16.9 28.6 64.9 20.0 100 na LEAD DISS. PB D UG/L AS PB 61 68.9 1.63 1.00 1.42 1.01 1.00 3.00 1.00 4.00 3LEAD TOTAL PB T UG/L AS PB 56 8.93 9.80 6.00 7.01 9.00 3.00 20.2 2.00 39.0 5MANGANESE DISS MN D UG/L AS MN 40 na 68.1 69.5 62.4 24.4 45.2 93.9 11.0 120 na MANGANESE TOT MD T UG/L AS MN 36 na 146 125 136 64.0 100 205 70.0 360 na MERCURY DISS. HG D UG/L AS HG 4 50.0 0.25 0.25 0.25 0.07 na na 0.20 0.30 0MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 4 75.0 20.0 20.0 20.0 na na na 20.0 20.0 1MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 60 10 4.20 4.00 3.52 3.03 2.00 6.00 1.00 20.0 5NICKEL TOTAL NI T UG/L AS NI 57 na 7.04 6.00 6.14 3.92 4.00 12.0 2.00 17.0 na SILVER DISS. AG D UG/L AS AG 4 100 na na na na na na na na 1SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 25 na 5.36 5.00 5.15 1.55 4.00 7.10 3.00 9.00 na SELENIUM TOTAL SE T UG/L AS SE 18 na 5.00 5.00 4.84 1.28 3.85 6.15 3.00 7.00 na ZINC DISS. ZN D UG/L AS ZN 61 na 47.5 35.0 38.7 34.4 21.0 80.0 5.20 160 na ZINC TOTAL ZN T UG/L AS ZN 57 na 77.4 60.0 66.9 48.7 40.0 110 30.0 280 na SULFIDE TOTAL H2S MG/L AS S 5 80.0 1.00 1.00 1.00 na na na 1.00 1.00 0CYANIDE TOTAL CYN MG/L AS CN 6 83.3 0.01 0.01 0.01 na na na 0.01 0.01 0SUSP SED SSED MG/L 1 na 805 805 805 na na na 805 805 na SUSP-SIEVE SIEV % 1 na 83.0 83.0 83.0 na na na 83.0 83.0 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 55

Table A8. Univariate statistics for water-quality data collected for station 5533, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 36 na 96.0 86.5 85.7 47.3 55.1 125 9.80 300 nSPECIFIC COND. CONDF US/CM @ 25C 35 na 807 824 797 124 670 884 441 1200 nSPECIFIC COND. CONDL MICROSIEMENS/C 36 na 775 803 765 125 642 846 444 1210 nPH, WH, FIELD PH STANDARD UNITS 34 na 7.92 7.90 7.92 0.10 7.80 8.00 7.70 8.20 nWATER TEMP. TEMP DEGREES 36 na 15.4 14.8 14.4 5.48 9.55 22.5 5.00 25.0 nOXYGEN DISS. DO MG/L 36 na 7.49 7.65 7.43 0.99 6.20 8.50 5.80 9.30 nOXYGEN DIS. % %DO % OF SATURATION 35 na 92.4 92.0 92.3 3.70 87.4 96.6 85.0 100 nBOD 5-DAY BOD5 MG/L 35 na 16.3 16.0 14.5 7.20 8.96 23.6 2.40 36.0 nCOLIFORM FECAL FCOL COLS./100 ML 34 na 1140 445 429 2270 100 1580 27.0 10000 nFECAL STRPT FSTRP COLS./100 ML 35 na 1860 420 622 4240 220 3100 80.0 22000 nCALCIUM DISS. CA MG/L AS CA 36 na 52.8 54.0 52.4 5.92 46.7 57.5 32.0 64.0 nMAGNESIUM DISS MG MG/L AS MG 36 na 16.2 17.0 15.9 2.59 13.0 18.0 8.40 22.0 nALKALINITY ALK MG/L AS CACO3 36 na 99.3 97.5 98.3 14.7 84.6 111 68.0 135 nSULFATE DISS. SO4 MG/L AS SO4 36 na 166 170 164 29.8 130 200 83.0 230 nCHLORIDE DISS. CL MG/L AS CL 33 na 44.3 40.0 39.6 31.5 28.1 50.7 17.0 210 nFLUORIDE DISS. F MG/L AS F 25 na 1.76 1.70 1.74 0.27 1.50 2.11 1.10 2.30 nHARDNESS TOTAL HARD MG/L AS CAO3 36 na 198 200 196 25.1 176 220 110 240 nRESIDUE TOTAL RES MG/L 36 na 95.0 65.5 72.2 109 43.1 119 29.0 646 nNITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na nUN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na nNO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 36 na 9.95 9.75 9.01 3.88 6.07 14.0 0.90 20.0 nPHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 36 88.9 1.00 1.00 1.00 0 na na 1.00 1.00 CADMIUM TOTAL CD T UG/L AS CD 36 94.4 1.00 1.00 1.00 0 na na 1.00 1.00 CHROMIUM DISS. CR D UG/L AS CR 36 61.1 1.71 1.50 1.54 0.82 1.00 3.00 1.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 36 88.9 1.75 1.50 1.57 0.96 na na 1.00 3.00 CHROMIUM TOTAL CR T UG/L AS CR 35 17.1 3.90 3.00 3.02 4.19 2.00 5.50 1.00 24.0 COPPER DISS. CU D UG/L AS CU 36 na 4.67 4.00 4.37 1.72 3.00 6.45 2.00 10 nCOPPER TOTAL CU T UG/L AS CU 36 5.56 9.62 8.50 8.95 4.55 7.00 12.0 5.00 31.0 IRON TOTAL FE T UG/L AS FE 36 na 2520 1650 1830 2930 862 3680 610 17000 nIRON DISS. FE D UG/L AS FE 36 na 38.1 33.0 35.7 14.3 24.0 53.5 18.0 80.0 nLEAD DISS. PB D UG/L AS PB 36 61.1 4.64 1.00 1.53 12.8 1.00 2.00 1.00 49.0 LEAD TOTAL PB T UG/L AS PB 35 2.86 7.53 4.50 5.22 12.3 3.00 9.75 2.00 75.0 MANGANESE DISS MN D UG/L AS MN 36 na 64.8 62.5 59.2 25.2 34.7 93.5 19.0 120 nMANGANESE TOT MD T UG/L AS MN 36 na 138 120 130 63.3 95.5 185 80.0 440 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 36 na 3.31 3.00 3.07 1.39 2.00 5.00 2.00 8.00 nNICKEL TOTAL NI T UG/L AS NI 36 2.78 5.66 5.00 5.02 3.01 3.00 7.60 1.00 16.0 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 36 na 28.6 27.0 27.0 9.76 20.0 39.5 13.0 53.0 nZINC TOTAL ZN T UG/L AS ZN 36 na 52.8 50.0 48.1 29.6 30.0 70.0 20.0 200 nSULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 0 na na na na na na na na na nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
56 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A9. Univariate statistics for water-quality data collected for station 5905, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 60 na 85.3 78.0 73.0 57.0 40.0 120 22.0 366 na SPECIFIC COND. CONDF US/CM @ 25C 59 na 1020 1040 1010 164 845 1190 572 1320 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 1000 1010 988 153 839 1150 573 1280 na PH, WH, FIELD PH STANDARD UNITS 58 na 7.91 7.90 7.91 0.13 7.80 8.10 7.60 8.20 na WATER TEMP. TEMP DEGREES 60 na 14.8 14.5 12.0 7.76 5.58 24.9 1.00 29.0 na OXYGEN DISS. DO MG/L 59 na 7.09 6.80 6.96 1.35 5.80 8.80 4.70 10 na OXYGEN DIS. % %DO % OF SATURATION 58 na 84.2 83.5 83.9 7.75 76.9 91.2 67.0 111 na BOD 5-DAY BOD5 MG/L 57 na 13.4 12.0 10.4 8.62 4.50 24.6 2.00 35.0 na COLIFORM FECAL FCOL COLS./100 ML 59 3.39 484 130 158 991 50.0 715 3.00 5500 21FECAL STRPT FSTRP COLS./100 ML 60 na 823 215 296 1640 102 1190 27.0 9100 na CALCIUM DISS. CA MG/L AS CA 43 na 76.1 75.0 74.7 14.4 64.4 87.6 39.0 110 na MAGNESIUM DISS MG MG/L AS MG 43 na 24.2 24.0 23.6 5.04 20.6 28.4 12.0 36.0 na ALKALINITY ALK MG/L AS CACO3 36 na 147 145 145 25.9 125 174 90.0 199 na SULFATE DISS. SO4 MG/L AS SO4 36 na 257 240 250 61.0 206 310 140 390 na CHLORIDE DISS. CL MG/L AS CL 33 na 45.8 46.0 44.3 11.9 33.3 54.0 22.0 79.0 na FLUORIDE DISS. F MG/L AS F 25 na 1.67 1.70 1.66 0.25 1.49 1.90 1.30 2.60 na HARDNESS TOTAL HARD MG/L AS CAO3 43 na 290 290 285 56.3 242 338 150 420 na RESIDUE TOTAL RES MG/L 59 na 131 71.0 76.1 174 36.0 215 1.00 1130 na NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 0 na na na na na na na na na na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 59 na 3.21 2.20 2.39 2.32 1.00 5.60 0.50 8.70 na PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 6 na 1.50 1.50 1.41 0.55 1.00 2.00 1.00 2.00 na ARSENIC TOTAL AS T UG/L AS AS 6 16.7 2.40 2.00 2.30 0.89 na na 2.00 4.00 1BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 6 na 177 176 176 20.5 151 200 150 200 na BORON TOTAL B T UG/L AS B 6 na 185 195 183 30.2 141 210 140 210 na CADMIUM DISS. CD D UG/L AS CD 57 82.5 1.30 1.00 1.23 0.48 1.00 2.00 1.00 2.00 1CADMIUM TOTAL CD T UG/L AS CD 56 85.7 1.13 1.00 1.09 0.35 1.00 1.65 1.00 2.00 1CHROMIUM DISS. CR D UG/L AS CR 56 71.4 1.38 1.00 1.30 0.50 1.00 2.00 1.00 2.00 1CHROMIUM HEX. CR6 UG/L AS CR 57 84.2 1.78 1.00 1.56 0.97 1.00 3.00 1.00 3.00 1CHROMIUM TOTAL CR T UG/L AS CR 56 25.0 4.81 4.00 3.63 3.95 2.00 9.10 1.00 20.0 1COPPER DISS. CU D UG/L AS CU 57 3.51 3.67 3.00 3.34 1.63 2.00 5.00 1.00 9.00 2COPPER TOTAL CU T UG/L AS CU 57 3.51 11.3 8.00 8.39 19.4 5.00 14.0 2.00 150 1IRON TOTAL FE T UG/L AS FE 57 na 4720 2400 2790 6280 1030 8860 400 38000 na IRON DISS. FE D UG/L AS FE 36 na 20.4 20.5 17.5 11.2 8.55 33.8 4.00 51.0 na LEAD DISS. PB D UG/L AS PB 57 75.4 1.14 1.00 1.08 0.54 1.00 1.00 1.00 3.00 2LEAD TOTAL PB T UG/L AS PB 56 17.9 10.6 6.00 6.35 15.1 2.05 22.0 1.00 94.0 4MANGANESE DISS MN D UG/L AS MN 36 na 76.7 71.5 58.5 48.3 18.2 135 13.0 160 na MANGANESE TOT MD T UG/L AS MN 36 na 188 185 165 95.4 91.0 293 40.0 430 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 57 3.51 3.98 4.00 3.71 1.48 3.00 5.60 1.00 9.00 7NICKEL TOTAL NI T UG/L AS NI 57 na 7.56 6.00 6.58 4.49 4.70 11.0 1.00 27.0 na SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 21 na 5.29 5.00 5.20 0.96 4.00 6.00 4.00 7.00 na SELENIUM TOTAL SE T UG/L AS SE 18 na 5.61 6.00 5.49 1.14 4.85 7.00 3.00 8.00 na ZINC DISS. ZN D UG/L AS ZN 57 na 21.3 20.0 19.1 10.2 10 30.3 7.00 50.0 na ZINC TOTAL ZN T UG/L AS ZN 57 1.75 62.9 45.0 46.9 87.9 30.0 80.0 10 650 1SULFIDE TOTAL H2S MG/L AS S 4 100 na na na na na na na na 0CYANIDE TOTAL CYN MG/L AS CN 5 100 na na na na na na na na 0SUSP SED SSED MG/L 0 na na na na na na na na na na SUSP-SIEVE SIEV % 0 na na na na na na na na na na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 57

Table A10. Univariate statistics for water-quality data collected for station 6300, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 155 na 111 74.5 67.0 129 24.9 184 0.72 1020 nSPECIFIC COND. CONDF US/CM @ 25C 129 na 1070 1100 1040 208 863 1260 480 1570 nSPECIFIC COND. CONDL MICROSIEMENS/C 9 na 1060 1070 1050 114 891 1180 885 1180 nPH, WH, FIELD PH STANDARD UNITS 12 na 8.22 8.26 8.22 0.19 8.17 8.40 7.65 8.40 nWATER TEMP. TEMP DEGREES 134 na 16.1 18.0 na 8.43 6.00 25.0 0 32.5 nOXYGEN DISS. DO MG/L 12 na 7.57 7.35 7.39 1.73 5.40 9.85 5.30 10.7 nOXYGEN DIS. % %DO % OF SATURATION 8 na 95.4 96.0 95.4 0.92 94.0 96.0 94.0 96.0 nBOD 5-DAY BOD5 MG/L 7 na 8.16 5.20 5.42 9.13 1.92 24.2 1.90 28.0 nCOLIFORM FECAL FCOL COLS./100 ML 8 na 478 225 234 610 40.0 1510 40.0 1800 nFECAL STRPT FSTRP COLS./100 ML 8 na 492 215 260 777 90.1 1690 47.0 2400 nCALCIUM DISS. CA MG/L AS CA 12 na 86.1 82.0 85.1 13.4 69.9 101 68.0 110 nMAGNESIUM DISS MG MG/L AS MG 12 na 26.5 25.0 26.2 4.01 22.9 31.2 21.0 34.0 nALKALINITY ALK MG/L AS CACO3 12 na 172 161 170 26.6 141 208 140 214 nSULFATE DISS. SO4 MG/L AS SO4 12 na 302 290 299 45.1 250 361 240 380 nCHLORIDE DISS. CL MG/L AS CL 12 na 50.6 49.5 48.7 16.1 35.8 59.9 31.0 96.0 nFLUORIDE DISS. F MG/L AS F 12 na 1.91 1.85 1.89 0.26 1.69 2.21 1.50 2.40 nHARDNESS TOTAL HARD MG/L AS CAO3 12 na 326 305 322 50.4 270 382 260 420 nRESIDUE TOTAL RES MG/L 8 na 217 185 174 148 74.6 433 70.0 445 nNITROGEN AMM TNH3 MG/L AS N 4 25.0 1.19 0.03 0.15 2.00 na na 0.03 3.50 UN-IONIZED AMM NH3- MG/L AS NH3 3 na 0.02 0.004 0.007 0.03 na na 0.002 0.05 nNO2 + NO3 DISS NO23 MG/L AS N 4 na 2.65 2.70 2.34 1.39 na na 1.10 4.10 nNITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na nNITROGEN AMM+ TNIT MG/L AS N 8 na 1.45 1.10 1.19 1.04 0.54 3.18 0.40 3.70 nPHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na nARSENIC DISS. AS D UG/L AS AS 4 25.0 4.00 4.00 4.00 0 na na 4.00 4.00 ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 4 na 43.3 43.5 42.5 8.96 na na 33.0 53.0 nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 3 na 190 180 188 36.1 na na 160 230 nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 12 91.7 2.00 2.00 2.00 na na na 2.00 2.00 CADMIUM TOTAL CD T UG/L AS CD 8 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 12 100 na na na na na na na na CHROMIUM HEX. CR6 UG/L AS CR 8 100 na na na na na na na na CHROMIUM TOTAL CR T UG/L AS CR 8 na 4.53 3.00 3.57 3.21 1.35 9.43 1.00 10.2 nCOPPER DISS. CU D UG/L AS CU 12 33.3 2.50 2.50 2.45 0.54 2.00 3.00 2.00 3.00 COPPER TOTAL CU T UG/L AS CU 8 na 10 9.50 9.06 4.34 4.35 15.0 4.00 15.0 nIRON TOTAL FE T UG/L AS FE 8 na 6410 5550 5210 4220 2070 12700 2000 13000 nIRON DISS. FE D UG/L AS FE 12 8.33 16.8 14.0 14.5 10.3 7.80 32.6 7.00 39.0 LEAD DISS. PB D UG/L AS PB 12 100 na na na na na na na na LEAD TOTAL PB T UG/L AS PB 8 na 15.0 12.0 12.8 9.93 7.00 31.5 7.00 36.0 nMANGANESE DISS MN D UG/L AS MN 12 na 19.8 13.5 14.7 17.0 4.95 50.4 4.00 57.0 nMANGANESE TOT MD T UG/L AS MN 8 na 225 205 195 124 90.0 405 90.0 440 nMERCURY DISS. HG D UG/L AS HG 4 75.0 0.20 0.20 0.20 na na na 0.20 0.20 MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 4 75.0 10 10 10 na na na 10 10 MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 12 33.3 3.13 3.00 3.02 0.83 2.00 4.00 2.00 4.00 NICKEL TOTAL NI T UG/L AS NI 8 na 7.75 6.50 7.34 2.76 5.00 11.0 5.00 11.0 nSILVER DISS. AG D UG/L AS AG 4 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 4 na 5.00 5.00 5.00 0 na na 5.00 5.00 nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 12 8.33 12.5 14.0 11.4 4.87 5.80 18.2 5.00 19.0 ZINC TOTAL ZN T UG/L AS ZN 8 na 55.0 55.0 48.2 28.8 23.5 96.5 20.0 100 nSULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 0 na na na na na na na na na nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
58 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A11. Univariate statistics for water-quality data collected for station 6500, October 1987 through September 1992Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 82 na 90.3 79.5 70.4 60.9 28.2 140 8.50 325 na SPECIFIC COND. CONDF US/CM @ 25C 82 na 1320 1320 1300 200 1120 1510 756 1780 na SPECIFIC COND. CONDL MICROSIEMENS/C 83 na 1300 1300 1290 195 1110 1520 751 1710 na PH, WH, FIELD PH STANDARD UNITS 80 na 8.32 8.30 8.32 0.16 8.20 8.50 7.80 8.70 na WATER TEMP. TEMP DEGREES 81 na 15.8 16.0 na 9.45 4.00 26.7 0 32.0 na OXYGEN DISS. DO MG/L 81 na 8.46 8.10 8.25 1.97 6.40 10.8 5.50 13.7 na OXYGEN DIS. % %DO % OF SATURATION 80 na 98.6 97.0 98.4 7.42 93.0 105 79.0 132 na BOD 5-DAY BOD5 MG/L 58 1.72 6.45 3.90 3.98 6.88 1.30 13.6 0.50 34.0 0COLIFORM FECAL FCOL COLS./100 ML 78 3.85 637 160 152 1720 31.2 932 3.00 13000 9FECAL STRPT FSTRP COLS./100 ML 77 1.30 1430 395 466 2880 140 2060 17.0 15000 44CALCIUM DISS. CA MG/L AS CA 23 na 96.7 96.0 95.9 12.8 83.2 110 73.0 120 na MAGNESIUM DISS MG MG/L AS MG 23 na 35.6 33.0 34.7 8.22 28.6 46.4 22.0 54.0 na ALKALINITY ALK MG/L AS CACO3 23 na 185 192 184 24.0 156 212 146 223 na SULFATE DISS. SO4 MG/L AS SO4 23 na 383 380 376 77.2 310 478 270 550 na CHLORIDE DISS. CL MG/L AS CL 23 na 50.4 52.0 49.8 7.88 40.6 59.0 34.0 62.0 na FLUORIDE DISS. F MG/L AS F 9 na 1.89 1.90 1.88 0.14 1.70 2.05 1.60 2.10 na HARDNESS TOTAL HARD MG/L AS CAO3 23 na 389 380 384 61.9 326 454 270 510 na RESIDUE TOTAL RES MG/L 59 na 519 168 155 1370 29.0 690 7.00 8950 na NITROGEN AMM TNH3 MG/L AS N 0 na na na na na na na na na na UN-IONIZED AMM NH3- MG/L AS NH3 0 na na na na na na na na na na NO2 + NO3 DISS NO23 MG/L AS N 1 na 4.70 4.70 4.70 na na na 4.70 4.70 na NITROGEN,NO2 NIT MG/L AS N 0 na na na na na na na na na na NITROGEN AMM+ TNIT MG/L AS N 60 1.67 1.36 1.10 1.06 0.96 0.50 2.40 0.20 3.90 2PHOSPHORUS O OPO4 MG/L AS P 0 na na na na na na na na na na ARSENIC DISS. AS D UG/L AS AS 1 na 4.00 4.00 4.00 na na na 4.00 4.00 na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 1 na 220 220 220 na na na 220 220 na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 23 60.9 0.24 0.20 0.20 0.16 0.10 0.50 0.10 0.50 0CADMIUM TOTAL CD T UG/L AS CD 21 81.0 1.50 1.00 1.32 1.00 na na 1.00 3.00 1CHROMIUM DISS. CR D UG/L AS CR 23 87.0 1.33 1.00 1.26 0.58 na na 1.00 2.00 1CHROMIUM HEX. CR6 UG/L AS CR 0 na na na na na na na na na na CHROMIUM TOTAL CR T UG/L AS CR 21 14.3 8.39 6.50 6.83 5.14 3.85 16.3 1.00 18.0 1COPPER DISS. CU D UG/L AS CU 23 na 2.35 2.00 2.19 0.94 2.00 3.40 1.00 5.00 na COPPER TOTAL CU T UG/L AS CU 20 na 15.6 10.5 10.5 20.9 4.15 23.3 3.00 100 na IRON TOTAL FE T UG/L AS FE 20 na 8980 8950 5550 6540 964 18000 230 20000 na IRON DISS. FE D UG/L AS FE 22 13.6 11.7 8.00 8.99 10.3 4.00 19.0 4.00 39.0 3LEAD DISS. PB D UG/L AS PB 23 78.3 0.66 0.70 0.65 0.11 na na 0.50 0.80 0LEAD TOTAL PB T UG/L AS PB 20 na 20.0 14.0 10.8 31.2 2.30 19.0 2.00 140 na MANGANESE DISS MN D UG/L AS MN 22 4.55 6.24 3.00 4.15 9.84 2.00 8.10 2.00 48.0 1MANGANESE TOT MD T UG/L AS MN 21 na 359 310 246 402 62.0 460 40.0 2000 na MERCURY DISS. HG D UG/L AS HG 1 na 0.50 0.50 0.50 na na na 0.50 0.50 na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 1 na 8.00 8.00 8.00 na na na 8.00 8.00 na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 22 na 3.23 3.00 3.13 0.81 2.00 4.00 2.00 5.00 na NICKEL TOTAL NI T UG/L AS NI 18 na 14.3 11.5 10.3 16.7 4.00 19.3 3.00 78.0 na SILVER DISS. AG D UG/L AS AG 21 95.2 1.00 1.00 1.00 na na na 1.00 1.00 1SILVER TOTAL AG T UG/L AS AG 22 90.9 1.00 1.00 1.00 0 na na 1.00 1.00 1SELENIUM DISS. SE D UG/L AS SE 19 na 21.3 19.0 17.9 12.8 10 33.0 5.00 53.0 na SELENIUM TOTAL SE T UG/L AS SE 13 na 25.5 22.0 23.2 12.2 16.0 41.0 11.0 56.0 na ZINC DISS. ZN D UG/L AS ZN 23 na 8.00 8.00 6.82 4.68 3.00 12.8 3.00 22.0 na ZINC TOTAL ZN T UG/L AS ZN 21 4.76 85.5 75.0 66.5 84.4 31.5 109 20.0 420 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 22 na 632 545 393 793 108 925 45.0 3930 na SUSP-SIEVE SIEV % 22 na 64.5 62.5 62.4 15.8 49.1 84.1 27.5 90.0 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 59

Table A12. Univariate statistics for water-quality data collected for station 3700, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 142 na 39.6 15.0 18.5 74.6 7.21 64.8 2.00 518 nSPECIFIC COND. CONDF US/CM @ 25C 118 na 298 293 280 99.4 179 407 129 565 nSPECIFIC COND. CONDL MICROSIEMENS/C 59 na 306 301 291 92.4 187 417 138 458 nPH, WH, FIELD PH STANDARD UNITS 58 na 8.14 8.20 8.13 0.24 7.80 8.40 7.60 8.50 nWATER TEMP. TEMP DEGREES 122 na 7.20 7.25 na 4.80 1.50 13.0 0 17.5 nOXYGEN DISS. DO MG/L 58 na 9.74 9.85 9.65 1.27 8.10 11.2 7.70 12.2 nOXYGEN DIS. % %DO % OF SATURATION 57 na 97.8 97.0 97.7 3.38 95.0 101 91.0 109 nBOD 5-DAY BOD5 MG/L 58 3.45 0.61 0.55 0.53 0.38 0.30 0.90 0.20 2.30 COLIFORM FECAL FCOL COLS./100 ML 54 na 350 135 161 556 50.0 668 8.00 3500 nFECAL STRPT FSTRP COLS./100 ML 56 na 415 180 214 682 55.8 735 26.0 4700 nCALCIUM DISS. CA MG/L AS CA 59 na 31.8 31.0 30.2 9.93 19.0 43.0 15.0 50.0 nMAGNESIUM DISS MG MG/L AS MG 59 na 6.35 6.20 5.95 2.15 3.69 8.70 2.70 10 nALKALINITY ALK MG/L AS CACO3 59 na 104 105 96.7 37.0 56.2 149 39.0 166 nSULFATE DISS. SO4 MG/L AS SO4 58 na 14.5 14.6 14.1 3.32 11.0 18.0 7.20 20.0 nCHLORIDE DISS. CL MG/L AS CL 58 na 16.6 16.0 15.3 6.32 9.25 24.0 6.30 33.7 nFLUORIDE DISS. F MG/L AS F 58 na 2.66 2.70 2.64 0.25 2.50 2.90 1.60 3.10 nHARDNESS TOTAL HARD MG/L AS CAO3 59 na 106 100 99.9 33.8 64.0 140 49.0 170 nRESIDUE TOTAL RES MG/L 59 3.39 27.1 12.0 10.7 43.2 2.00 42.2 1.00 212 NITROGEN AMM TNH3 MG/L AS N 55 60.0 0.02 0.02 0.02 0.008 0.02 0.03 0.01 0.04 UN-IONIZED AMM NH3- MG/L AS NH3 22 na 0.0006 0.001 na 0.0006 0 0.001 0 0.002 nNO2 + NO3 DISS NO23 MG/L AS N 55 na 0.83 0.86 0.77 0.27 0.50 1.10 0.12 1.30 nNITROGEN,NO2 NIT MG/L AS N 55 81.8 0.01 0.01 0.01 0.005 0.01 0.02 0.01 0.02 NITROGEN AMM+ TNIT MG/L AS N 59 76.3 0.31 0.21 0.28 0.15 0.20 0.45 0.20 0.70 PHOSPHORUS O OPO4 MG/L AS P 55 80.0 0.01 0.01 0.01 0.005 0.01 0.02 0.01 0.02 ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 1 na 85.7 85.7 85.7 na na na 85.7 85.7 nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 1 na 45.8 45.8 45.8 na na na 45.8 45.8 nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 59 98.3 3.00 3.00 3.00 na na na 3.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 59 96.6 1.00 1.00 1.00 0 na na 1.00 1.00 CHROMIUM TOTAL CR T UG/L AS CR 59 86.4 1.43 1.20 1.36 0.46 1.00 2.07 1.00 2.10 COPPER DISS. CU D UG/L AS CU 59 79.7 1.18 1.00 1.13 0.44 1.00 1.46 0.89 2.50 COPPER TOTAL CU T UG/L AS CU 59 42.4 1.81 1.95 1.63 0.89 1.00 2.95 1.00 4.00 IRON TOTAL FE T UG/L AS FE 59 na 925 440 541 1180 180 1500 130 5900 nIRON DISS. FE D UG/L AS FE 59 5.08 40.9 37.5 31.7 30.9 12.5 60.0 6.52 189 LEAD DISS. PB D UG/L AS PB 59 96.6 1.45 1.45 1.33 0.79 na na 0.89 2.00 LEAD TOTAL PB T UG/L AS PB 59 50.8 3.72 2.00 2.81 3.17 1.10 8.00 1.00 12.0 MANGANESE DISS MN D UG/L AS MN 59 1.69 30.2 29.1 28.2 10.6 17.0 41.5 9.00 53.0 MANGANESE TOT MD T UG/L AS MN 59 na 86.2 60.0 70.4 68.3 40.0 120 30.0 350 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 1 na 2.48 2.48 2.48 na na na 2.48 2.48 nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 59 93.2 1.32 1.15 1.27 0.47 na na 1.00 2.00 NICKEL TOTAL NI T UG/L AS NI 59 64.4 1.68 1.00 1.40 1.39 1.00 2.70 1.00 7.00 SILVER DISS. AG D UG/L AS AG 1 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 59 52.5 4.79 5.00 4.64 1.20 3.15 6.00 3.00 7.00 ZINC TOTAL ZN T UG/L AS ZN 59 61.0 21.3 20.0 19.0 10.6 10 30.0 10 50.0 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 51 na 383 31.0 45.1 1400 9.96 315 2.90 8020 nSUSP-SIEVE SIEV % 1 na 60.0 60.0 60.0 na na na 60.0 60.0 n------------------------------------------------------------------------------------------------------------------------------------------------------
60 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A13. Univariate statistics for water-quality data collected for station 3747, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 58 na 4.25 1.10 1.72 8.76 0.50 8.62 0.27 62.0 na SPECIFIC COND. CONDF US/CM @ 25C 58 na 163 168 157 38.9 117 198 77.0 228 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 162 168 157 40.8 111 201 75.0 228 na PH, WH, FIELD PH STANDARD UNITS 56 na 7.87 7.90 7.87 0.19 7.70 8.10 7.30 8.20 na WATER TEMP. TEMP DEGREES 59 na 7.26 5.00 na 5.86 1.00 15.0 0 20.0 na OXYGEN DISS. DO MG/L 55 na 9.17 9.50 9.08 1.28 7.50 10.7 7.00 11.0 na OXYGEN DIS. % %DO % OF SATURATION 54 na 97.2 97.0 97.2 4.02 94.0 101 90.0 115 na BOD 5-DAY BOD5 MG/L 57 3.51 0.41 0.40 na 0.24 0.10 0.70 0 0.90 0COLIFORM FECAL FCOL COLS./100 ML 55 3.64 43.2 22.0 19.5 68.3 4.10 76.5 1.00 420 1FECAL STRPT FSTRP COLS./100 ML 56 na 89.0 55.0 57.2 134 24.6 140 7.00 1000 na CALCIUM DISS. CA MG/L AS CA 59 na 19.5 20.0 18.8 5.24 13.0 25.0 8.70 29.0 na MAGNESIUM DISS MG MG/L AS MG 59 na 3.28 3.50 3.08 1.06 1.90 4.40 1.10 5.10 na ALKALINITY ALK MG/L AS CACO3 59 na 59.8 61.0 56.8 18.1 37.0 81.0 20.0 96.0 na SULFATE DISS. SO4 MG/L AS SO4 59 na 7.57 7.40 7.30 1.90 5.57 9.80 3.00 11.4 na CHLORIDE DISS. CL MG/L AS CL 59 na 6.01 5.50 5.11 3.33 2.38 9.60 1.40 19.0 na FLUORIDE DISS. F MG/L AS F 59 na 1.70 1.70 1.69 0.18 1.60 1.87 0.90 2.10 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 62.4 64.0 59.7 17.4 40.0 81.0 26.0 93.0 na RESIDUE TOTAL RES MG/L 59 16.9 7.47 4.00 4.79 8.89 2.00 12.5 1.00 50.0 1NITROGEN AMM TNH3 MG/L AS N 56 57.1 0.05 0.02 0.02 0.14 0.01 0.03 0.01 0.71 0UN-IONIZED AMM NH3- MG/L AS NH3 22 na 0.0005 0 na 0.001 0 0.001 0 0.005 na NO2 + NO3 DISS NO23 MG/L AS N 56 67.9 0.33 0.07 0.09 1.09 0.05 0.13 0.05 4.70 0NITROGEN,NO2 NIT MG/L AS N 56 92.9 0.05 0.01 0.02 0.08 na na 0.01 0.18 0NITROGEN AMM+ TNIT MG/L AS N 59 81.4 0.39 0.30 0.31 0.38 0.20 0.70 0.20 1.50 0PHOSPHORUS O OPO4 MG/L AS P 56 85.7 0.13 0.01 0.02 0.34 0.01 0.63 0.01 0.96 0ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 59 98.3 1.00 1.00 1.00 na na na 1.00 1.00 1CADMIUM TOTAL CD T UG/L AS CD 58 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 59 93.2 2.25 1.00 1.57 2.50 na na 1.00 6.00 1CHROMIUM HEX. CR6 UG/L AS CR 58 94.8 1.67 1.00 1.44 1.15 na na 1.00 3.00 1CHROMIUM TOTAL CR T UG/L AS CR 58 91.4 2.86 3.00 2.71 0.93 na na 1.40 4.00 1COPPER DISS. CU D UG/L AS CU 59 88.1 1.30 1.00 1.24 0.48 1.00 2.00 1.00 2.00 1COPPER TOTAL CU T UG/L AS CU 58 75.9 1.76 1.00 1.42 1.62 1.00 2.75 1.00 7.00 1IRON TOTAL FE T UG/L AS FE 58 na 528 440 467 354 299 745 209 2700 na IRON DISS. FE D UG/L AS FE 58 1.72 131 120 111 69.4 60.0 200 19.0 310 1LEAD DISS. PB D UG/L AS PB 59 100 na na na na na na na na 1LEAD TOTAL PB T UG/L AS PB 58 93.1 1.50 1.00 1.32 1.00 na na 1.00 3.00 1MANGANESE DISS MN D UG/L AS MN 59 na 108 70.0 70.1 103 21.0 220 12.0 510 na MANGANESE TOT MD T UG/L AS MN 58 na 128 100 96.4 104 40.0 232 20.0 530 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 100 na na na na na na na na 1NICKEL TOTAL NI T UG/L AS NI 58 82.8 2.00 1.50 1.68 1.33 1.00 3.70 1.00 5.00 1SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 69.5 5.86 4.50 5.19 3.23 3.00 11.0 3.00 14.0 4ZINC TOTAL ZN T UG/L AS ZN 58 91.4 18.0 10 15.5 11.0 na na 10 30.0 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 0 na na na na na na na na na na SUSP-SIEVE SIEV % 0 na na na na na na na na na na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 61

Table A14. Univariate statistics for water-quality data collected for station 3780, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 118 na 14.4 5.75 7.87 20.9 2.70 29.0 1.40 158 nSPECIFIC COND. CONDF US/CM @ 25C 115 na 279 302 267 76.1 182 353 112 405 nSPECIFIC COND. CONDL MICROSIEMENS/C 59 na 287 305 275 77.6 177 357 133 415 nPH, WH, FIELD PH STANDARD UNITS 58 na 8.21 8.20 8.20 0.31 7.89 8.50 7.50 9.00 nWATER TEMP. TEMP DEGREES 117 na 10.7 10.5 na 7.11 2.00 19.2 0 26.0 nOXYGEN DISS. DO MG/L 56 na 9.09 8.85 8.99 1.39 7.66 10.8 6.70 11.8 nOXYGEN DIS. % %DO % OF SATURATION 56 na 102 100 102 7.41 95.6 111 92.0 125 nBOD 5-DAY BOD5 MG/L 59 1.69 1.31 1.20 1.21 0.54 0.88 1.80 0.20 3.60 COLIFORM FECAL FCOL COLS./100 ML 56 na 43.7 32.5 22.0 54.9 5.00 80.9 1.00 340 nFECAL STRPT FSTRP COLS./100 ML 59 1.69 44.1 28.0 26.1 53.1 8.85 84.3 3.00 350 CALCIUM DISS. CA MG/L AS CA 59 na 25.7 27.0 25.2 4.92 19.1 30.0 14.4 34.0 nMAGNESIUM DISS MG MG/L AS MG 59 na 4.23 4.50 4.11 0.94 2.94 5.20 2.15 5.80 nALKALINITY ALK MG/L AS CACO3 59 na 78.5 82.0 76.2 17.5 56.0 97.0 35.0 108 nSULFATE DISS. SO4 MG/L AS SO4 59 na 22.2 24.0 20.7 7.71 12.0 30.0 9.57 37.0 nCHLORIDE DISS. CL MG/L AS CL 59 na 20.3 21.4 18.3 8.01 9.34 29.0 5.42 34.0 nFLUORIDE DISS. F MG/L AS F 59 na 1.44 1.40 1.43 0.15 1.30 1.60 1.10 1.70 nHARDNESS TOTAL HARD MG/L AS CAO3 59 na 81.8 86.0 80.0 16.2 60.0 96.0 45.0 110 nRESIDUE TOTAL RES MG/L 59 5.08 28.8 11.0 12.9 43.9 5.00 65.2 1.00 187 NITROGEN AMM TNH3 MG/L AS N 56 26.8 0.15 0.04 0.07 0.26 0.02 0.28 0.02 1.20 UN-IONIZED AMM NH3- MG/L AS NH3 40 na 0.005 0.002 na 0.02 0.001 0.005 0 0.10 nNO2 + NO3 DISS NO23 MG/L AS N 56 10.7 0.69 0.44 0.42 0.66 0.10 1.34 0.06 3.20 NITROGEN,NO2 NIT MG/L AS N 56 46.4 0.03 0.02 0.02 0.02 0.01 0.04 0.01 0.13 NITROGEN AMM+ TNIT MG/L AS N 59 na 0.58 0.50 0.51 0.34 0.34 0.80 0.20 1.70 nPHOSPHORUS O OPO4 MG/L AS P 56 na 0.73 0.70 0.56 0.44 0.23 1.20 0.04 2.10 nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 59 96.6 3.30 3.30 3.22 0.99 na na 2.60 4.00 CHROMIUM HEX. CR6 UG/L AS CR 59 94.9 1.33 1.00 1.26 0.58 na na 1.00 2.00 CHROMIUM TOTAL CR T UG/L AS CR 58 94.8 1.83 2.00 1.82 0.29 na na 1.50 2.00 COPPER DISS. CU D UG/L AS CU 59 18.6 1.91 2.00 1.71 0.93 1.00 3.00 1.00 5.00 COPPER TOTAL CU T UG/L AS CU 59 6.78 2.49 2.00 2.12 2.08 1.00 3.84 1.00 16.0 IRON TOTAL FE T UG/L AS FE 59 na 783 530 613 722 330 1300 259 3700 nIRON DISS. FE D UG/L AS FE 55 na 90.7 94.0 80.3 40.9 40.0 126 13.0 220 nLEAD DISS. PB D UG/L AS PB 59 96.6 3.00 3.00 2.24 2.83 na na 1.00 5.00 LEAD TOTAL PB T UG/L AS PB 59 69.5 2.09 1.80 1.74 1.41 1.00 4.15 1.00 5.00 MANGANESE DISS MN D UG/L AS MN 59 na 43.7 42.0 41.7 13.2 30.0 56.0 23.0 76.0 nMANGANESE TOT MD T UG/L AS MN 59 na 86.2 80.0 76.8 46.7 50.0 120 20.0 300 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 59 39.0 1.72 2.00 1.60 0.65 1.00 2.00 1.00 3.20 NICKEL TOTAL NI T UG/L AS NI 59 16.9 2.08 2.00 1.94 0.72 1.00 3.00 1.00 3.00 SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 59 39.0 10.2 10 9.50 3.77 6.44 13.5 4.00 20.0 ZINC TOTAL ZN T UG/L AS ZN 59 52.5 16.3 17.5 15.1 6.69 10 20.0 10 30.0 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 0 na na na na na na na na na nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
62 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A15. Univariate statistics for water-quality data collected for station 4000, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 151 na 44.1 25.0 29.2 57.1 14.7 66.4 2.90 333 na SPECIFIC COND. CONDF US/CM @ 25C 131 na 411 445 396 100 276 500 168 653 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 432 465 422 84.3 325 500 197 549 na PH, WH, FIELD PH STANDARD UNITS 58 na 8.34 8.40 8.33 0.23 8.10 8.52 7.60 8.70 na WATER TEMP. TEMP DEGREES 131 na 13.2 13.5 na 8.24 2.50 23.0 0 28.5 na OXYGEN DISS. DO MG/L 56 na 8.49 8.25 8.33 1.68 6.66 10.8 6.20 12.0 na OXYGEN DIS. % %DO % OF SATURATION 56 na 99.4 99.0 99.3 3.61 96.0 103 86.0 107 na BOD 5-DAY BOD5 MG/L 59 1.69 0.93 0.80 0.80 0.63 0.40 1.32 0.30 4.20 0COLIFORM FECAL FCOL COLS./100 ML 56 5.36 248 78.0 78.0 443 10.1 502 3.00 2480 2FECAL STRPT FSTRP COLS./100 ML 59 na 198 120 110 300 32.0 290 8.00 2100 na CALCIUM DISS. CA MG/L AS CA 59 na 51.6 55.0 50.0 11.7 36.9 62.0 21.0 69.0 na MAGNESIUM DISS MG MG/L AS MG 59 na 6.80 7.30 6.61 1.45 4.87 8.10 3.10 8.80 na ALKALINITY ALK MG/L AS CACO3 59 na 111 116 108 23.5 81.0 133 45.0 151 na SULFATE DISS. SO4 MG/L AS SO4 59 na 62.2 67.0 59.5 16.2 39.0 76.0 23.0 86.0 na CHLORIDE DISS. CL MG/L AS CL 59 na 21.6 22.0 20.7 6.33 16.0 26.0 9.80 52.0 na FLUORIDE DISS. F MG/L AS F 59 na 1.13 1.10 1.12 0.19 1.00 1.40 0.60 1.55 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 157 170 152 35.5 110 190 65.0 210 na RESIDUE TOTAL RES MG/L 59 na 171 114 125 204 66.0 256 43.0 1320 na NITROGEN AMM TNH3 MG/L AS N 56 33.9 0.09 0.03 0.04 0.22 0.02 0.12 0.01 1.30 0UN-IONIZED AMM NH3- MG/L AS NH3 36 na 0.004 0.002 na 0.009 0.001 0.005 0 0.06 na NO2 + NO3 DISS NO23 MG/L AS N 56 na 1.90 2.10 1.73 0.72 1.00 2.75 0.44 3.10 na NITROGEN,NO2 NIT MG/L AS N 56 41.1 0.01 0.01 0.01 0.006 0.01 0.02 0.01 0.03 0NITROGEN AMM+ TNIT MG/L AS N 59 5.08 0.48 0.40 0.41 0.36 0.26 0.65 0.20 2.00 0PHOSPHORUS O OPO4 MG/L AS P 56 na 0.11 0.10 0.10 0.06 0.07 0.15 0.02 0.44 na ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na 1CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 59 98.3 1.00 1.00 1.00 na na na 1.00 1.00 1CHROMIUM HEX. CR6 UG/L AS CR 59 91.5 1.40 1.00 1.32 0.55 na na 1.00 2.00 1CHROMIUM TOTAL CR T UG/L AS CR 58 72.4 2.39 1.95 2.00 1.68 1.10 5.37 1.00 6.10 1COPPER DISS. CU D UG/L AS CU 59 57.6 1.62 1.00 1.30 1.54 1.00 2.17 1.00 7.40 1COPPER TOTAL CU T UG/L AS CU 59 na 4.03 3.00 3.35 4.22 2.00 5.00 1.00 33.0 na IRON TOTAL FE T UG/L AS FE 59 na 2390 1900 2010 1750 1300 3400 310 9200 na IRON DISS. FE D UG/L AS FE 58 17.2 14.6 10 10.8 15.0 4.62 25.6 3.00 97.0 7LEAD DISS. PB D UG/L AS PB 59 98.3 2.00 2.00 2.00 na na na 2.00 2.00 1LEAD TOTAL PB T UG/L AS PB 59 1.69 4.68 3.00 3.19 6.64 2.00 7.00 1.00 43.0 1MANGANESE DISS MN D UG/L AS MN 59 3.39 23.5 25.0 18.9 13.1 7.46 35.3 3.35 50.0 1MANGANESE TOT MD T UG/L AS MN 59 na 107 90.0 91.9 71.5 60.0 140 30.0 380 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 52.5 1.21 1.00 1.16 0.39 1.00 2.00 1.00 2.00 1NICKEL TOTAL NI T UG/L AS NI 58 na 2.67 2.00 2.33 1.73 1.54 3.52 1.00 11.0 na SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 69.5 5.32 5.00 5.03 1.88 3.00 8.15 3.00 9.00 4ZINC TOTAL ZN T UG/L AS ZN 59 16.9 23.1 20.0 18.7 19.1 10 30.0 10 90.0 1SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 20 na 659 125 226 1050 59.6 2160 48.0 3770 na SUSP-SIEVE SIEV % 0 na na na na na na na na na na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 63

Table A16. Univariate statistics for water-quality data collected for station 4905, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 59 na 34.9 22.0 25.1 44.8 14.0 47.0 6.10 305 nSPECIFIC COND. CONDF US/CM @ 25C 58 na 643 679 626 138 449 766 254 901 nSPECIFIC COND. CONDL MICROSIEMENS/C 59 na 649 683 632 138 457 776 257 931 nPH, WH, FIELD PH STANDARD UNITS 58 na 8.37 8.40 8.36 0.23 8.20 8.60 7.50 8.60 nWATER TEMP. TEMP DEGREES 59 na 14.0 15.0 na 9.46 1.00 25.0 0 30.0 nOXYGEN DISS. DO MG/L 57 na 8.45 7.80 8.25 1.88 6.57 11.3 5.80 12.6 nOXYGEN DIS. % %DO % OF SATURATION 57 na 99.4 98.0 99.3 5.03 96.0 103 89.0 125 nBOD 5-DAY BOD5 MG/L 59 1.69 1.06 0.80 0.77 0.98 0.40 1.63 0.10 5.50 COLIFORM FECAL FCOL COLS./100 ML 55 na 220 140 123 275 34.0 300 8.00 1350 nFECAL STRPT FSTRP COLS./100 ML 58 na 264 195 178 313 95.5 400 17.0 1800 nCALCIUM DISS. CA MG/L AS CA 59 na 74.7 80.0 72.1 17.8 48.1 90.0 27.0 110 nMAGNESIUM DISS MG MG/L AS MG 59 na 13.5 14.0 12.9 3.72 8.10 17.0 4.60 23.0 nALKALINITY ALK MG/L AS CACO3 59 na 140 149 136 28.7 99.0 161 56.0 197 nSULFATE DISS. SO4 MG/L AS SO4 59 na 141 150 133 43.0 83.0 180 38.0 240 nCHLORIDE DISS. CL MG/L AS CL 59 na 25.9 26.0 24.8 7.52 18.0 30.0 11.0 54.0 nFLUORIDE DISS. F MG/L AS F 59 na 1.29 1.30 1.28 0.18 1.20 1.50 0.50 1.62 nHARDNESS TOTAL HARD MG/L AS CAO3 59 na 241 260 232 60.0 150 290 86.0 370 nRESIDUE TOTAL RES MG/L 58 1.72 190 128 130 190 42.1 334 15.0 1070 NITROGEN AMM TNH3 MG/L AS N 56 41.1 0.07 0.02 0.03 0.15 0.02 0.08 0.01 0.83 UN-IONIZED AMM NH3- MG/L AS NH3 32 na 0.003 0.002 na 0.007 0 0.004 0 0.04 nNO2 + NO3 DISS NO23 MG/L AS N 56 na 3.15 3.30 2.94 1.02 1.67 4.10 0.72 4.80 nNITROGEN,NO2 NIT MG/L AS N 56 30.4 0.02 0.02 0.02 0.01 0.01 0.02 0.01 0.07 NITROGEN AMM+ TNIT MG/L AS N 59 8.47 0.51 0.40 0.44 0.29 0.30 0.79 0.20 1.50 PHOSPHORUS O OPO4 MG/L AS P 56 1.79 0.08 0.08 0.07 0.04 0.04 0.11 0.02 0.31 ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 59 98.3 2.00 2.00 2.00 na na na 2.00 2.00 CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 59 93.2 1.63 1.25 1.47 0.93 na na 1.00 3.00 CHROMIUM HEX. CR6 UG/L AS CR 58 94.8 1.33 1.00 1.26 0.58 na na 1.00 2.00 CHROMIUM TOTAL CR T UG/L AS CR 58 25.9 2.92 2.10 2.41 2.25 1.40 5.16 1.00 12.0 COPPER DISS. CU D UG/L AS CU 59 25.4 1.39 1.00 1.25 0.96 1.00 2.00 1.00 6.80 COPPER TOTAL CU T UG/L AS CU 59 na 5.46 4.00 4.47 4.47 2.80 8.00 2.00 25.0 nIRON TOTAL FE T UG/L AS FE 59 na 4030 2700 2790 4120 1300 6080 470 20000 nIRON DISS. FE D UG/L AS FE 58 58.6 8.27 5.00 6.69 6.35 4.00 16.0 3.00 28.0 LEAD DISS. PB D UG/L AS PB 59 98.3 3.00 3.00 3.00 na na na 3.00 3.00 LEAD TOTAL PB T UG/L AS PB 59 5.08 6.05 4.00 4.20 7.08 2.00 9.45 1.00 42.0 MANGANESE DISS MN D UG/L AS MN 59 16.9 3.57 3.00 2.93 2.36 1.13 6.00 1.00 10 MANGANESE TOT MD T UG/L AS MN 59 1.69 117 90.0 85.3 107 30.0 176 10 590 MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 59 39.0 1.49 1.20 1.40 0.55 1.00 2.00 1.00 3.00 NICKEL TOTAL NI T UG/L AS NI 58 na 4.12 3.00 3.40 3.20 2.00 6.06 1.00 18.0 nSILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na nSELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 59 69.5 5.56 5.00 5.07 2.74 3.00 7.72 3.00 14.0 ZINC TOTAL ZN T UG/L AS ZN 59 16.9 31.4 20.0 24.3 29.2 10 50.0 10 160 SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 0 na na na na na na na na na nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
64 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A17. Univariate statistics for water-quality data collected for station 5500, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 193 na 101 43.0 52.5 185 23.0 163 4.00 1800 na SPECIFIC COND. CONDF US/CM @ 25C 163 na 592 600 562 176 374 756 222 1010 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 587 607 559 168 372 751 237 974 na PH, WH, FIELD PH STANDARD UNITS 59 na 8.18 8.20 8.18 0.19 8.00 8.40 7.60 8.40 na WATER TEMP. TEMP DEGREES 170 na 11.8 12.0 na 7.42 2.50 20.5 0 28.5 na OXYGEN DISS. DO MG/L 59 na 9.32 9.30 9.20 1.49 7.50 11.2 6.40 11.9 na OXYGEN DIS. % %DO % OF SATURATION 59 na 99.8 99.0 99.7 5.28 95.0 104 91.0 125 na BOD 5-DAY BOD5 MG/L 58 na 0.99 0.80 0.80 0.74 0.40 1.43 0.10 4.00 na COLIFORM FECAL FCOL COLS./100 ML 53 na 286 150 150 290 36.1 599 11.0 1100 na FECAL STRPT FSTRP COLS./100 ML 57 na 462 280 267 551 77.0 819 35.0 3300 na CALCIUM DISS. CA MG/L AS CA 59 na 61.6 64.0 58.5 18.1 38.3 81.0 24.0 100 na MAGNESIUM DISS MG MG/L AS MG 59 na 13.8 15.0 12.9 4.80 7.78 18.0 4.00 25.0 na ALKALINITY ALK MG/L AS CACO3 59 na 125 134 120 33.2 77.1 157 55.0 191 na SULFATE DISS. SO4 MG/L AS SO4 59 na 128 130 116 49.7 61.5 180 32.0 271 na CHLORIDE DISS. CL MG/L AS CL 59 na 22.4 24.0 21.2 6.53 14.0 28.0 8.40 35.0 na FLUORIDE DISS. F MG/L AS F 59 na 2.01 2.00 1.98 0.35 1.70 2.37 1.20 3.10 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 211 220 200 63.9 130 270 76.0 350 na RESIDUE TOTAL RES MG/L 59 na 117 84.0 86.8 110 38.0 171 22.0 640 na NITROGEN AMM TNH3 MG/L AS N 55 30.9 0.04 0.03 0.03 0.03 0.02 0.09 0.01 0.14 0UN-IONIZED AMM NH3- MG/L AS NH3 38 na 0.001 0.001 na 0.001 0 0.002 0 0.006 na NO2 + NO3 DISS NO23 MG/L AS N 55 na 2.20 2.45 2.02 0.82 1.17 3.00 0.59 3.70 na NITROGEN,NO2 NIT MG/L AS N 55 38.2 0.02 0.02 0.02 0.01 0.01 0.03 0.01 0.06 0NITROGEN AMM+ TNIT MG/L AS N 59 22.0 0.37 0.30 0.33 0.22 0.20 0.50 0.20 1.20 0PHOSPHORUS O OPO4 MG/L AS P 55 3.64 0.05 0.05 0.04 0.02 0.03 0.07 0.02 0.08 0ARSENIC DISS. AS D UG/L AS AS 10 80.0 1.00 1.00 1.00 0 na na 1.00 1.00 1ARSENIC TOTAL AS T UG/L AS AS 9 22.2 2.14 2.00 2.03 0.69 1.20 3.00 1.00 3.00 1BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 10 na 57.1 65.0 52.0 22.0 26.5 80.0 20.0 80.0 na BORON TOTAL B T UG/L AS B 10 na 63.5 70.0 60.6 19.2 38.3 83.5 35.0 90.0 na CADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na 1CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 59 98.3 1.00 1.00 1.00 na na na 1.00 1.00 1CHROMIUM HEX. CR6 UG/L AS CR 59 96.6 2.00 2.00 2.00 0 na na 2.00 2.00 1CHROMIUM TOTAL CR T UG/L AS CR 58 39.7 2.12 1.80 1.84 1.29 1.04 3.76 1.00 6.10 1COPPER DISS. CU D UG/L AS CU 59 47.5 1.25 1.00 1.19 0.43 1.00 2.00 1.00 2.10 1COPPER TOTAL CU T UG/L AS CU 59 3.39 3.66 3.00 3.19 2.14 2.00 5.58 1.00 11.0 1IRON TOTAL FE T UG/L AS FE 59 na 2640 2000 2010 2300 940 4600 510 12000 na IRON DISS. FE D UG/L AS FE 59 28.8 16.2 7.00 8.83 32.3 5.00 17.8 3.00 160 5LEAD DISS. PB D UG/L AS PB 59 100 na na na na na na na na 1LEAD TOTAL PB T UG/L AS PB 59 na 5.93 3.60 3.94 7.39 2.00 11.0 1.00 48.0 na MANGANESE DISS MN D UG/L AS MN 59 3.39 22.6 21.0 19.3 12.9 9.70 33.3 6.00 70.0 1MANGANESE TOT MD T UG/L AS MN 59 na 108 90.0 94.2 65.7 60.0 170 30.0 410 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 50.8 1.12 1.00 1.09 0.31 1.00 1.20 1.00 2.00 1NICKEL TOTAL NI T UG/L AS NI 59 5.08 2.89 3.00 2.59 1.47 2.00 4.00 1.00 9.00 1SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 28 na 4.28 4.12 3.76 1.96 1.98 6.72 1.00 7.00 na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 50.8 5.88 5.00 5.43 2.46 3.37 9.52 3.00 12.0 4ZINC TOTAL ZN T UG/L AS ZN 59 10.2 24.9 20.0 21.2 15.8 10 39.7 10 90.0 1SULFIDE TOTAL H2S MG/L AS S 10 90.0 0.80 0.80 0.80 na na na 0.80 0.80 0CYANIDE TOTAL CYN MG/L AS CN 10 100 na na na na na na na na 0SUSP SED SSED MG/L 49 na 663 149 199 1760 63.5 630 44.0 10200 na SUSP-SIEVE SIEV % 1 na 46.0 46.0 46.0 na na na 46.0 46.0 na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 65

Table A18. Univariate statistics for water-quality data collected for station 5530, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet 

CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, m

per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; 

ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CEN

--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeaDISCHARGE CFS CFS 59 na 135 97.0 112 135 75.0 190 54.0 1000 na SPECIFIC COND. CONDF US/CM @ 25C 58 na 719 767 703 136 562 824 301 893 na SPECIFIC COND. CONDL MICROSIEMENS/C 58 na 716 755 702 127 555 831 341 897 na PH, WH, FIELD PH STANDARD UNITS 59 na 7.91 7.90 7.91 0.15 7.80 8.00 7.50 8.20 na WATER TEMP. TEMP DEGREES 59 na 14.9 14.5 14.2 4.61 9.50 21.0 7.50 23.5 na OXYGEN DISS. DO MG/L 58 na 7.71 7.80 7.67 0.83 6.50 8.60 6.10 9.20 na OXYGEN DIS. % %DO % OF SATURATION 57 na 94.2 94.0 94.0 5.13 89.0 99.0 84.0 114 na BOD 5-DAY BOD5 MG/L 56 na 10.7 11.0 9.01 5.65 4.43 17.0 1.50 29.0 na COLIFORM FECAL FCOL COLS./100 ML 56 na 451 190 198 695 48.1 868 13.0 3300 na FECAL STRPT FSTRP COLS./100 ML 56 na 395 265 251 519 92.4 613 48.0 3300 na CALCIUM DISS. CA MG/L AS CA 59 na 49.9 50.9 49.2 8.29 41.4 59.0 27.0 67.0 na MAGNESIUM DISS MG MG/L AS MG 59 na 15.1 16.0 14.8 3.01 12.0 18.0 6.30 20.4 na ALKALINITY ALK MG/L AS CACO3 59 na 98.1 96.0 96.7 15.8 82.0 115 56.0 130 na SULFATE DISS. SO4 MG/L AS SO4 59 na 152 160 148 32.4 118 180 54.0 200 na CHLORIDE DISS. CL MG/L AS CL 59 na 36.2 38.0 34.6 9.33 25.0 44.0 12.0 53.0 na FLUORIDE DISS. F MG/L AS F 59 na 1.80 1.80 1.78 0.27 1.50 2.10 1.30 2.42 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 187 190 183 32.9 160 220 93.0 240 na RESIDUE TOTAL RES MG/L 59 na 65.4 46.0 49.4 67.2 24.0 100 15.0 446 na NITROGEN AMM TNH3 MG/L AS N 56 1.79 4.93 5.30 2.90 3.60 0.72 9.66 0.02 11.0 0UN-IONIZED AMM NH3- MG/L AS NH3 55 na 0.11 0.08 0.06 0.10 0.01 0.21 0.001 0.43 na NO2 + NO3 DISS NO23 MG/L AS N 56 na 2.63 2.50 2.43 0.98 1.67 3.90 0.71 4.60 na NITROGEN,NO2 NIT MG/L AS N 56 1.79 0.18 0.15 0.14 0.21 0.08 0.22 0.02 1.60 0NITROGEN AMM+ TNIT MG/L AS N 59 na 6.79 7.00 5.00 4.39 1.68 12.0 0.50 16.0 na PHOSPHORUS O OPO4 MG/L AS P 56 na 1.07 0.83 0.53 0.94 0.07 2.29 0.03 2.80 na ARSENIC DISS. AS D UG/L AS AS 10 60.0 1.00 1.00 1.00 0 na na 1.00 1.00 1ARSENIC TOTAL AS T UG/L AS AS 9 22.2 2.00 2.00 1.85 0.81 1.00 3.00 1.00 3.00 1BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 10 na 124 145 109 52.2 43.0 167 30.0 180 na BORON TOTAL B T UG/L AS B 10 na 122 135 111 48.1 53.0 170 40.0 170 na CADMIUM DISS. CD D UG/L AS CD 59 98.3 2.00 2.00 2.00 na na na 2.00 2.00 1CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 59 79.7 1.50 1.20 1.40 0.66 1.10 2.62 1.00 3.00 1CHROMIUM HEX. CR6 UG/L AS CR 59 91.5 1.80 2.00 1.64 0.84 na na 1.00 3.00 1CHROMIUM TOTAL CR T UG/L AS CR 59 39.0 2.10 2.00 1.95 0.82 1.20 3.00 1.00 4.70 1COPPER DISS. CU D UG/L AS CU 59 8.47 3.23 3.00 2.81 1.66 1.78 5.00 1.00 8.00 1COPPER TOTAL CU T UG/L AS CU 59 na 6.20 6.00 5.57 2.88 3.00 9.00 2.00 14.0 na IRON TOTAL FE T UG/L AS FE 59 na 1460 860 1050 1550 533 2200 280 9000 na IRON DISS. FE D UG/L AS FE 59 na 52.9 37.0 36.7 97.6 20.0 65.0 7.97 770 na LEAD DISS. PB D UG/L AS PB 59 91.5 1.40 1.00 1.25 0.89 na na 1.00 3.00 1LEAD TOTAL PB T UG/L AS PB 59 3.39 4.76 3.00 3.32 5.63 2.00 7.15 1.00 33.0 1MANGANESE DISS MN D UG/L AS MN 59 na 57.5 60.0 52.9 20.4 32.0 74.0 13.0 110 na MANGANESE TOT MD T UG/L AS MN 59 na 109 100 103 46.7 80.0 140 40.0 350 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 8.47 2.65 2.40 2.37 1.37 1.40 3.00 1.00 9.00 1NICKEL TOTAL NI T UG/L AS NI 59 na 3.77 4.00 3.51 1.54 2.70 5.00 1.30 10 na SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 28 na 3.54 3.55 3.33 1.22 2.46 4.46 1.00 7.00 na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 3.39 24.6 23.0 22.5 9.46 14.4 34.6 5.36 50.0 3ZINC TOTAL ZN T UG/L AS ZN 59 na 37.8 35.0 35.0 14.2 25.0 50.0 10 80.0 na SULFIDE TOTAL H2S MG/L AS S 10 100 na na na na na na na na 0.CYANIDE TOTAL CYN MG/L AS CN 10 100 na na na na na na na na 0.SUSP SED SSED MG/L 0 na na na na na na na na na na SUSP-SIEVE SIEV % 0 na na na na na na na na na na ------------------------------------------------------------------------------------------------------------------------------------------------------
66 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A19. Univariate statistics for water-quality data collected for station 5533, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 59 na 126 95.0 104 131 67.0 162 47.0 1000 na SPECIFIC COND. CONDF US/CM @ 25C 59 na 723 770 708 133 526 839 379 910 na SPECIFIC COND. CONDL MICROSIEMENS/C 59 na 712 751 698 132 516 824 373 914 na PH, WH, FIELD PH STANDARD UNITS 59 na 7.94 8.00 7.94 0.17 7.80 8.10 7.40 8.20 na WATER TEMP. TEMP DEGREES 59 na 14.7 14.0 13.8 5.27 9.00 21.0 5.00 30.0 na OXYGEN DISS. DO MG/L 57 na 7.78 7.90 7.72 0.99 6.57 8.70 5.50 10.4 na OXYGEN DIS. % %DO % OF SATURATION 57 na 94.2 94.0 94.0 5.61 89.0 99.3 82.0 106 na BOD 5-DAY BOD5 MG/L 57 na 12.1 12.0 10.1 6.68 5.67 18.3 1.10 33.0 na COLIFORM FECAL FCOL COLS./100 ML 55 na 380 190 186 501 54.4 780 3.00 2600 na FECAL STRPT FSTRP COLS./100 ML 56 na 418 270 259 427 68.7 742 41.0 1700 na CALCIUM DISS. CA MG/L AS CA 59 na 50.4 51.0 49.7 8.40 41.0 58.0 31.0 72.0 na MAGNESIUM DISS MG MG/L AS MG 59 na 15.2 16.0 14.9 2.84 12.8 18.0 8.00 21.2 na ALKALINITY ALK MG/L AS CACO3 59 na 97.5 97.0 96.2 15.9 79.0 117 62.0 128 na SULFATE DISS. SO4 MG/L AS SO4 58 na 155 170 151 31.8 112 180 73.5 220 na CHLORIDE DISS. CL MG/L AS CL 58 na 36.7 38.0 35.1 10.2 22.9 46.0 14.0 61.0 na FLUORIDE DISS. F MG/L AS F 58 na 1.83 1.80 1.81 0.27 1.60 2.11 1.40 2.49 na HARDNESS TOTAL HARD MG/L AS CAO3 59 na 188 190 185 32.1 150 220 110 260 na RESIDUE TOTAL RES MG/L 59 na 68.7 45.0 49.4 60.6 26.0 126 4.00 258 na NITROGEN AMM TNH3 MG/L AS N 55 1.82 4.95 4.80 3.00 3.58 0.87 9.95 0.06 11.0 0UN-IONIZED AMM NH3- MG/L AS NH3 54 na 0.13 0.08 0.07 0.12 0.02 0.28 0.001 0.49 na NO2 + NO3 DISS NO23 MG/L AS N 55 na 2.72 2.70 2.45 1.05 1.75 3.70 0.12 5.60 na NITROGEN,NO2 NIT MG/L AS N 55 na 0.20 0.16 0.15 0.21 0.07 0.30 0.01 1.50 na NITROGEN AMM+ TNIT MG/L AS N 59 1.69 7.00 6.65 5.22 4.37 1.76 12.0 0.42 16.0 0PHOSPHORUS O OPO4 MG/L AS P 55 1.82 1.06 0.83 0.57 0.90 0.12 2.28 0.03 2.80 0ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 1 na 25.1 25.1 25.1 na na na 25.1 25.1 na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 1 100 na na na na na na na na 2BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na 0CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 59 78.0 1.45 1.20 1.34 0.77 1.00 1.96 1.00 3.80 1CHROMIUM HEX. CR6 UG/L AS CR 58 100 na na na na na na na na 1CHROMIUM TOTAL CR T UG/L AS CR 58 24.1 1.83 1.85 1.71 0.71 1.10 2.83 1.00 3.60 1COPPER DISS. CU D UG/L AS CU 59 5.08 3.08 2.23 2.59 1.79 1.00 5.00 1.00 8.00 1COPPER TOTAL CU T UG/L AS CU 59 na 6.46 6.00 5.86 2.88 3.10 9.00 2.30 16.0 na IRON TOTAL FE T UG/L AS FE 59 na 1540 860 1130 1450 570 3100 350 6500 na IRON DISS. FE D UG/L AS FE 59 na 35.9 36.0 30.2 20.0 15.0 53.0 5.16 98.0 na LEAD DISS. PB D UG/L AS PB 59 93.2 1.03 1.02 1.02 0.03 na na 1.00 1.06 1LEAD TOTAL PB T UG/L AS PB 59 1.69 4.54 3.00 3.35 4.65 2.00 6.32 1.00 24.0 1MANGANESE DISS MN D UG/L AS MN 59 na 57.0 60.0 52.5 20.3 27.0 73.0 17.2 100 na MANGANESE TOT MD T UG/L AS MN 59 na 111 100 106 41.1 80.0 150 66.0 280 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 1 na 5.93 5.93 5.93 na na na 5.93 5.93 na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 59 10.2 2.76 3.00 2.50 1.36 2.00 4.00 1.00 9.00 1NICKEL TOTAL NI T UG/L AS NI 58 na 3.69 4.00 3.46 1.49 2.00 4.58 1.80 10 na SILVER DISS. AG D UG/L AS AG 1 100 na na na na na na na na 0SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 0 na na na na na na na na na na SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 59 3.39 22.5 22.0 20.2 9.64 11.7 32.0 6.00 46.0 3ZINC TOTAL ZN T UG/L AS ZN 59 na 37.8 40.0 35.6 12.8 28.0 50.0 10 70.0 na SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 0 na na na na na na na na na na SUSP-SIEVE SIEV % 0 na na na na na na na na na na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 67

Table A20. Univariate statistics for water-quality data collected for station 5905, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 58 na 138 102 103 142 46.3 211 24.0 845 nSPECIFIC COND. CONDF US/CM @ 25C 59 na 941 990 922 171 691 1070 494 1230 nSPECIFIC COND. CONDL MICROSIEMENS/C 59 na 926 971 909 165 694 1050 498 1230 nPH, WH, FIELD PH STANDARD UNITS 58 na 7.96 8.00 7.96 0.12 7.89 8.10 7.60 8.20 nWATER TEMP. TEMP DEGREES 59 na 10.9 10 na 6.31 4.00 17.0 0 23.5 nOXYGEN DISS. DO MG/L 59 na 7.98 7.90 7.88 1.26 6.40 9.60 5.90 10.8 nOXYGEN DIS. % %DO % OF SATURATION 59 na 87.0 86.0 86.6 7.80 79.0 96.0 73.0 105 nBOD 5-DAY BOD5 MG/L 58 na 11.6 6.65 8.34 9.76 3.93 25.0 1.00 34.0 nCOLIFORM FECAL FCOL COLS./100 ML 53 1.89 491 230 256 561 62.8 1010 9.00 2400 30FECAL STRPT FSTRP COLS./100 ML 55 na 431 240 231 542 72.2 866 18.0 2400 nCALCIUM DISS. CA MG/L AS CA 59 na 70.4 72.0 68.9 13.6 53.3 83.0 37.0 100 nMAGNESIUM DISS MG MG/L AS MG 59 na 22.8 23.0 22.2 4.66 17.6 27.0 11.0 33.0 nALKALINITY ALK MG/L AS CACO3 59 na 141 141 138 24.2 112 161 82.0 191 nSULFATE DISS. SO4 MG/L AS SO4 59 na 240 240 234 53.3 170 290 110 380 nCHLORIDE DISS. CL MG/L AS CL 59 na 44.4 47.0 43.0 9.71 34.0 52.0 16.0 59.0 nFLUORIDE DISS. F MG/L AS F 59 na 1.67 1.70 1.65 0.26 1.40 1.90 0.80 2.25 nHARDNESS TOTAL HARD MG/L AS CAO3 59 na 270 280 264 52.3 210 320 140 380 nRESIDUE TOTAL RES MG/L 59 na 150 79.0 82.3 224 29.0 236 14.0 1340 nNITROGEN AMM TNH3 MG/L AS N 56 3.57 1.55 0.55 0.52 1.85 0.08 3.90 0.02 6.00 UN-IONIZED AMM NH3- MG/L AS NH3 53 na 0.02 0.008 na 0.02 0.002 0.04 0 0.09 nNO2 + NO3 DISS NO23 MG/L AS N 56 1.79 4.65 4.80 4.38 1.44 2.77 6.16 1.30 7.50 NITROGEN,NO2 NIT MG/L AS N 56 1.79 0.12 0.09 0.09 0.08 0.05 0.23 0.01 0.34 NITROGEN AMM+ TNIT MG/L AS N 59 1.69 2.49 1.25 1.74 2.12 0.72 5.42 0.40 8.00 PHOSPHORUS O OPO4 MG/L AS P 56 1.79 0.87 0.71 0.66 0.60 0.27 1.56 0.08 2.30 ARSENIC DISS. AS D UG/L AS AS 10 20.0 1.50 1.50 1.41 0.54 1.00 2.00 1.00 2.00 ARSENIC TOTAL AS T UG/L AS AS 9 11.1 2.71 2.32 2.44 1.28 1.35 4.65 1.00 5.00 BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 10 na 165 190 151 61.5 73.0 224 60.0 230 nBORON TOTAL B T UG/L AS B 9 na 157 180 145 58.4 80.0 220 70.0 230 nCADMIUM DISS. CD D UG/L AS CD 59 100 na na na na na na na na CADMIUM TOTAL CD T UG/L AS CD 59 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 59 96.6 1.90 1.90 1.90 0.14 na na 1.80 2.00 CHROMIUM HEX. CR6 UG/L AS CR 58 96.6 3.50 3.50 3.46 0.71 na na 3.00 4.00 CHROMIUM TOTAL CR T UG/L AS CR 58 24.1 2.68 1.95 2.13 2.52 1.17 4.93 1.00 15.0 COPPER DISS. CU D UG/L AS CU 59 1.69 2.56 2.00 2.36 1.45 2.00 3.00 1.00 12.1 COPPER TOTAL CU T UG/L AS CU 59 na 7.25 6.00 6.29 4.62 4.00 11.0 2.00 28.0 nIRON TOTAL FE T UG/L AS FE 59 na 4060 1800 2170 7120 930 4860 530 45000 nIRON DISS. FE D UG/L AS FE 59 6.78 23.9 20.0 18.8 16.7 7.92 38.0 3.60 99.0 LEAD DISS. PB D UG/L AS PB 59 98.3 1.00 1.00 1.00 na na na 1.00 1.00 LEAD TOTAL PB T UG/L AS PB 59 na 6.97 4.00 4.43 8.76 2.00 12.0 1.00 50.0 nMANGANESE DISS MN D UG/L AS MN 59 na 58.1 60.0 41.5 39.8 12.0 110 4.25 150 nMANGANESE TOT MD T UG/L AS MN 59 na 174 150 148 123 90.0 220 46.0 809 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 59 1.69 3.08 3.00 2.94 0.88 2.00 4.00 1.00 5.00 NICKEL TOTAL NI T UG/L AS NI 58 na 5.75 5.00 5.26 3.19 4.00 7.00 3.00 22.0 nSILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na nSILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na nSELENIUM DISS. SE D UG/L AS SE 29 3.45 4.50 4.19 4.37 1.13 3.10 5.65 3.00 8.00 SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na nZINC DISS. ZN D UG/L AS ZN 59 6.78 15.9 16.0 14.6 6.27 9.69 22.9 4.00 30.0 ZINC TOTAL ZN T UG/L AS ZN 59 na 41.5 33.0 35.8 28.8 20.0 50.0 10 200 nSULFIDE TOTAL H2S MG/L AS S 10 90.0 0.80 0.80 0.80 na na na 0.80 0.80 CYANIDE TOTAL CYN MG/L AS CN 10 100 na na na na na na na na SUSP SED SSED MG/L 0 na na na na na na na na na nSUSP-SIEVE SIEV % 0 na na na na na na na na na n------------------------------------------------------------------------------------------------------------------------------------------------------
68 Summary of Water-Quality Data, October 1987 through September 1997, for Fountain and Monument Creeks, 

El Paso and Pueblo Counties, Colorado

Table A21. Univariate statistics for water-quality data collected for station 6300, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting li

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G memean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, mper centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS CE--------------------- ------------------------------------------------------------------------------------ -----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MeDISCHARGE CFS CFS 168 na 198 129 113 502 49.1 213 4.40 5750 na SPECIFIC COND. CONDF US/CM @ 25C 165 na 1030 1080 1010 181 809 1200 492 1390 na SPECIFIC COND. CONDL MICROSIEMENS/C 19 na 1040 1080 1030 154 878 1200 680 1240 na PH, WH, FIELD PH STANDARD UNITS 20 na 8.22 8.30 8.21 0.15 8.02 8.30 7.90 8.40 na WATER TEMP. TEMP DEGREES 168 na 14.4 15.0 na 7.49 5.50 23.0 0 29.0 na OXYGEN DISS. DO MG/L 20 na 8.64 8.40 8.52 1.50 7.02 10.5 6.80 12.0 na OXYGEN DIS. % %DO % OF SATURATION 19 na 94.9 94.0 94.8 5.66 89.0 101 84.0 106 na BOD 5-DAY BOD5 MG/L 19 na 6.15 5.30 4.90 3.66 1.80 12.0 0.70 13.0 na COLIFORM FECAL FCOL COLS./100 ML 15 na 252 210 173 193 46.4 520 22.0 610 na FECAL STRPT FSTRP COLS./100 ML 17 na 359 130 133 548 25.0 1020 10 1940 na CALCIUM DISS. CA MG/L AS CA 20 na 82.4 82.7 81.4 12.3 70.2 97.0 56.1 100 na MAGNESIUM DISS MG MG/L AS MG 20 na 25.7 26.0 25.3 3.95 21.3 30.7 17.0 32.0 na ALKALINITY ALK MG/L AS CACO3 20 na 167 168 165 25.3 148 196 109 205 na SULFATE DISS. SO4 MG/L AS SO4 20 na 283 285 278 47.5 233 339 180 360 na CHLORIDE DISS. CL MG/L AS CL 20 na 48.5 52.0 47.4 9.04 37.9 54.9 25.0 57.0 na FLUORIDE DISS. F MG/L AS F 20 na 1.88 1.90 1.87 0.18 1.70 2.09 1.60 2.30 na HARDNESS TOTAL HARD MG/L AS CAO3 20 na 310 310 306 47.6 263 369 210 380 na RESIDUE TOTAL RES MG/L 20 na 181 157 150 129 87.3 246 44.0 562 na NITROGEN AMM TNH3 MG/L AS N 19 31.6 0.21 0.03 0.07 0.30 0.02 0.74 0.02 0.79 0UN-IONIZED AMM NH3- MG/L AS NH3 13 na 0.003 0.002 0.002 0.003 0.001 0.008 0.001 0.01 na NO2 + NO3 DISS NO23 MG/L AS N 19 na 4.74 4.30 4.30 1.81 3.04 6.80 0.84 7.80 na NITROGEN,NO2 NIT MG/L AS N 19 47.4 0.04 0.04 0.03 0.03 0.01 0.08 0.01 0.09 0NITROGEN AMM+ TNIT MG/L AS N 20 na 1.01 0.95 0.89 0.52 0.50 1.74 0.30 2.20 na PHOSPHORUS O OPO4 MG/L AS P 19 na 0.64 0.55 0.54 0.39 0.22 1.00 0.19 1.50 na ARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na na ARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na na BARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na na BARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na na BORON DISS. B D UG/L AS B 0 na na na na na na na na na na BORON TOTAL B T UG/L AS B 0 na na na na na na na na na na CADMIUM DISS. CD D UG/L AS CD 20 100 na na na na na na na na 1CADMIUM TOTAL CD T UG/L AS CD 20 100 na na na na na na na na 1CHROMIUM DISS. CR D UG/L AS CR 20 100 na na na na na na na na 1CHROMIUM HEX. CR6 UG/L AS CR 20 95.0 2.00 2.00 2.00 na na na 2.00 2.00 1CHROMIUM TOTAL CR T UG/L AS CR 20 na 2.82 2.40 2.46 1.63 1.32 5.22 1.00 7.10 na COPPER DISS. CU D UG/L AS CU 20 na 2.31 2.00 2.06 1.32 1.02 3.00 1.00 7.10 na COPPER TOTAL CU T UG/L AS CU 20 na 7.80 7.50 7.00 3.52 4.00 12.9 2.00 15.3 na IRON TOTAL FE T UG/L AS FE 20 na 4150 3550 3620 2610 2120 5170 1700 12100 na IRON DISS. FE D UG/L AS FE 20 20.0 10.9 9.50 8.50 7.24 3.04 21.5 3.00 22.0 4LEAD DISS. PB D UG/L AS PB 20 100 na na na na na na na na 1LEAD TOTAL PB T UG/L AS PB 20 na 8.53 7.00 7.22 5.98 4.00 15.6 4.00 27.1 na MANGANESE DISS MN D UG/L AS MN 20 15.0 7.44 4.00 5.79 5.61 2.85 14.5 2.00 20.0 7MANGANESE TOT MD T UG/L AS MN 20 na 182 165 165 92.8 110 287 70.0 438 na MERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na na MERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na na MOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na na MOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na na NICKEL DISS. NI D UG/L AS NI 20 na 2.74 3.00 2.66 0.63 2.00 3.00 1.40 4.00 na NICKEL TOTAL NI T UG/L AS NI 20 na 6.62 6.00 6.33 2.22 5.00 9.55 4.20 12.0 na SILVER DISS. AG D UG/L AS AG 0 na na na na na na na na na na SILVER TOTAL AG T UG/L AS AG 0 na na na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 9 11.1 4.66 4.65 4.62 0.71 4.00 5.65 4.00 6.00 1SELENIUM TOTAL SE T UG/L AS SE 0 na na na na na na na na na na ZINC DISS. ZN D UG/L AS ZN 20 10 10.0 9.00 8.47 6.41 4.26 14.9 3.09 28.3 6ZINC TOTAL ZN T UG/L AS ZN 20 na 43.4 40.0 40.5 16.9 29.2 60.0 20.0 86.0 na SULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na na CYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na na SUSP SED SSED MG/L 0 na na na na na na na na na na SUSP-SIEVE SIEV % 0 na na na na na na na na na na -------------------------------------------------------------------------------------------------------------------------------------------------------
APPENDIX 69

Table A22. Univariate statistics for water-quality data collected for station 6500, October 1992 through September 1997Note: DETECTIONS refers to analyses with results greater than detection limits; CENSOREDS refers to analyses with results less than method reporting l

abbreviations used on figures; Samples, number of samples collected; % < MRL, percent of samples collected less than method reporting limit; G mmean, Stddev, standard deviation; 15.0% 15th percentile; 85.0%, 85th percentile; Min, minimum, Max, maximum; na, not applicable; CFS, cubic feet CONDF, specific conductance measured in field; CONDL, specific conductance measured in lab; US/CM, microsiemens per centimeter, MICROSIEMENS/C, per centimeter; WH, whole water; MG/L, milligram per liter; COLS, colonies; ML, milliliter; DISS, dissolved; D, Dissolved, TOT, total; T, total; ammonia; HEX, hexavalent; Standard, Colorado Department of Public Health and Environment chronic in-stream standard (standard listed for NO23 is 

Samples % < MRL DETECTIONS C--------------------- ------------------------------------------------------------------------------------ ----

Variable Abrv Units Mean Median G mean Stddev 15.0% 85.0% Min Max MDISCHARGE CFS CFS 63 na 177 122 113 266 41.2 262 11.0 2040 nSPECIFIC COND. CONDF US/CM @ 25C 63 na 1210 1220 1180 256 957 1470 591 2030 nSPECIFIC COND. CONDL MICROSIEMENS/C 61 na 1220 1200 1190 253 960 1490 656 2040 nPH, WH, FIELD PH STANDARD UNITS 61 na 8.31 8.40 8.31 0.13 8.20 8.40 7.90 8.50 nWATER TEMP. TEMP DEGREES 63 na 14.4 14.5 na 8.23 4.80 24.4 0 30.5 nOXYGEN DISS. DO MG/L 61 na 8.62 8.40 8.49 1.55 6.73 10.4 6.10 11.6 nOXYGEN DIS. % %DO % OF SATURATION 61 na 98.7 98.0 98.6 4.11 95.0 103 90.0 115 nBOD 5-DAY BOD5 MG/L 59 na 3.85 2.40 na 4.27 0.80 7.10 0 22.0 nCOLIFORM FECAL FCOL COLS./100 ML 56 na 370 135 144 564 28.1 836 10 2800 nFECAL STRPT FSTRP COLS./100 ML 58 na 518 160 195 810 47.2 1240 10 3200 nCALCIUM DISS. CA MG/L AS CA 3 na 100 100 100 9.50 na na 91.0 110 nMAGNESIUM DISS MG MG/L AS MG 3 na 36.7 37.0 36.5 4.51 na na 32.0 41.0 nALKALINITY ALK MG/L AS CACO3 4 na 196 196 195 21.2 na na 173 220 nSULFATE DISS. SO4 MG/L AS SO4 3 na 380 370 377 55.7 na na 330 440 nCHLORIDE DISS. CL MG/L AS CL 3 na 58.0 56.0 57.9 4.36 na na 55.0 63.0 nFLUORIDE DISS. F MG/L AS F 0 na na na na na na na na na nHARDNESS TOTAL HARD MG/L AS CAO3 3 na 400 400 399 40.0 na na 360 440 nRESIDUE TOTAL RES MG/L 58 1.72 333 194 186 481 71.0 436 6.00 2410 NITROGEN AMM TNH3 MG/L AS N 57 26.3 0.15 0.03 0.05 0.31 0.02 0.24 0.02 1.50 UN-IONIZED AMM NH3- MG/L AS NH3 41 na 0.004 0.003 na 0.007 0.001 0.006 0 0.04 nNO2 + NO3 DISS NO23 MG/L AS N 58 na 5.10 5.20 4.82 1.58 3.01 7.02 2.00 7.50 nNITROGEN,NO2 NIT MG/L AS N 56 46.4 0.03 0.02 0.02 0.02 0.01 0.05 0.01 0.09 NITROGEN AMM+ TNIT MG/L AS N 59 na 1.05 0.80 0.80 0.94 0.40 1.60 0.20 4.60 nPHOSPHORUS O OPO4 MG/L AS P 56 na 0.52 0.40 0.42 0.35 0.25 0.95 0.11 1.50 nARSENIC DISS. AS D UG/L AS AS 0 na na na na na na na na na nARSENIC TOTAL AS T UG/L AS AS 0 na na na na na na na na na nBARIUM DISS. BA D UG/L AS BA 0 na na na na na na na na na nBARIUM TOTAL BA T UG/L AS BA 0 na na na na na na na na na nBORON DISS. B D UG/L AS B 0 na na na na na na na na na nBORON TOTAL B T UG/L AS B 0 na na na na na na na na na nCADMIUM DISS. CD D UG/L AS CD 3 66.7 0.10 0.10 0.10 na na na 0.10 0.10 CADMIUM TOTAL CD T UG/L AS CD 3 100 na na na na na na na na CHROMIUM DISS. CR D UG/L AS CR 3 66.7 2.00 2.00 2.00 na na na 2.00 2.00 CHROMIUM HEX. CR6 UG/L AS CR 0 na na na na na na na na na nCHROMIUM TOTAL CR T UG/L AS CR 3 na 6.33 3.00 4.38 6.66 na na 2.00 14.0 nCOPPER DISS. CU D UG/L AS CU 3 na 2.33 2.00 2.29 0.58 na na 2.00 3.00 nCOPPER TOTAL CU T UG/L AS CU 3 na 8.33 8.00 8.32 0.58 na na 8.00 9.00 nIRON TOTAL FE T UG/L AS FE 3 na 4500 4700 4340 1410 na na 3000 5800 nIRON DISS. FE D UG/L AS FE 3 na 11.3 13.0 10.8 3.79 na na 7.00 14.0 nLEAD DISS. PB D UG/L AS PB 3 66.7 0.80 0.80 0.80 na na na 0.80 0.80 LEAD TOTAL PB T UG/L AS PB 3 na 11.3 8.00 9.86 7.57 na na 6.00 20.0 nMANGANESE DISS MN D UG/L AS MN 3 na 5.00 5.00 4.72 2.00 na na 3.00 7.00 nMANGANESE TOT MD T UG/L AS MN 3 na 200 200 197 40.0 na na 160 240 nMERCURY DISS. HG D UG/L AS HG 0 na na na na na na na na na nMERCURY, TOT HG T UG/L AS HG 0 na na na na na na na na na nMOLYBDENUM DIS MO D UG/L AS MO 0 na na na na na na na na na nMOLYBDENUM TOT MO T UG/L AS MO 0 na na na na na na na na na nNICKEL DISS. NI D UG/L AS NI 3 na 2.67 3.00 2.62 0.58 na na 2.00 3.00 nNICKEL TOTAL NI T UG/L AS NI 3 na 6.33 7.00 6.26 1.15 na na 5.00 7.00 nSILVER DISS. AG D UG/L AS AG 3 100 na na na na na na na na SILVER TOTAL AG T UG/L AS AG 3 100 na na na na na na na na SELENIUM DISS. SE D UG/L AS SE 31 3.23 16.5 14.5 15.0 7.64 8.94 26.0 6.00 38.0 SELENIUM TOTAL SE T UG/L AS SE 3 na 23.7 21.0 23.1 6.43 na na 19.0 31.0 nZINC DISS. ZN D UG/L AS ZN 3 na 8.67 9.00 8.41 2.52 na na 6.00 11.0 nZINC TOTAL ZN T UG/L AS ZN 3 na 30.0 40.0 25.2 17.3 na na 10 40.0 nSULFIDE TOTAL H2S MG/L AS S 0 na na na na na na na na na nCYANIDE TOTAL CYN MG/L AS CN 0 na na na na na na na na na nSUSP SED SSED MG/L 3 na 352 365 343 91.7 na na 254 436 nSUSP-SIEVE SIEV % 3 na 43.9 54.3 36.8 25.8 na na 14.6 62.9 n------------------------------------------------------------------------------------------------------------------------------------------------------