U.S. Department of the Interior 

U.S. Geological Survey

Hydrologic and Chemical Data from the Long Valley 

Hydrologic Advisory Committee Monitoring Program in 

Long Valley Caldera, Mono County, California, 1988-1997

By Michael L. Sorey and Christopher D. Farrar

Open-File Report 98-70

Menlo Park, California 

1998
U.S. Department of the Interior

BRUCE BABBIT, Secretary

U.S. Geological Survey

Mark Schaefer, Acting Director

The use of firm, trade, or brand names in this report

is for identification purposes only and does not constitute

endorsement by the U.S. Geological Survey

For sale by the U.S. Geological Survey

Branch of Information Services

Box 25286

Denver Federal Center

Denver, Colorado 80225-0286

For additional information write to: 

Michael. L. Sorey 

U.S. Geological Survey 

345 Middlefield Road 

Menlo Park, California 94025
CONTENTS

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

Introduction ............................................................ 2

Purpose, Scope, and Format .......................................... 2

Descriptions of Study Area and Monitoring Sites ......................... 3

Previous Reports ................................................... 3

Acknowledgments ....................................................... 4

Methods of Data Collection ............................................... 5

Pressures and Water Levels in Wells and Pools ........................... 5

Flow Measurements in Springs and Streams ............................. 5

Water-Temperature Measurements ..................................... 6

Chemical Analyses of Water Samples .................................. 6

Thermal-Water Discharge Calculations ................................. 7

References Cited ................................................... 9

FIGURES

1. Location map of the Long Valley caldera region ........................... 11

2. Map showing locations of hydrologic monitoring sites ...................... 12

3. Graphs of daily mean values of depth-to-water and pressure at 6,800 ft

elevation in observation well RDO-8 .................................... 13

4. Graph of daily mean values and instantaneous values of depth-to-water in

observation well CW-3 ............................................... 14

5. Graph of daily mean values of water level at Hot Bubbling Pool .............. 15

6. Graph of daily mean values of depth-to-water in observation well CH-10B ..... 16

7. Graph of instantaneous measurements of water level in observation well

M-14 ............................................................. 17

8. Graph of instantaneous measurements of water in observation well SC-2 ....... 18

9. Graph of instantaneous measurements of water level in observation well

SQ ............................................................... 19

10. Graphs of precipitation at Mammoth Ranger Station by precipitation year ...... 20

11. Graphs of precipitation at Mammoth Ranger Station by calendar year .......... 21

12. Graphs of daily mean discharge at Hot Creek Flume ....................... 22

13. Graph of instantaneous discharge in Hot Creek above the thermal springs

in the gorge ........................................................ 23

14. Graph of instantaneous discharge in Mammoth Creek at Highway 395 ......... 24

15. Graph of instantaneous discharge in Mammoth Creek above the input

from the Fish Hatchery ............................................... 25
16. Graph of daily mean and instantaneous discharge at Colton Spring ........... 26

17. Graph of calculated thermal-water discharge from hot springs in Hot

Creek Gorge ...................................................... 27

18. Graph of continuous discharge, Fish Hatchery spring group AB ............. 28

19. Graphs of instantaneous discharge, monthly mean temperature, and

calculated thermal-water discharge, Fish Hatchery spring group AB .......... 29

20. Graphs of instantaneous discharge, monthly mean temperature, and

calculated thermal-water discharge, Fish Hatchery spring group CD .......... 30

21. Graphs of combined instantaneous discharge, calculated thermal-water 

discharge, and percent thermal water, Fish Hatchery spring groups 

AB and CD ....................................................... 31

22. Graphs of monthly mean discharge and temperature, Fish Hatchery

spring group 2,3 ................................................... 32

TABLES

1. Chemical analyses of waters collected and analyzed by the U.S. Geological

Survey ........................................................... 33

11
Hydrologic and Chemical Data from the Long Valley 

Hydrologic Advisory Committee Monitoring Program in 

Long Valley Caldera, Mono County, California, 1988-1997

By Michael L. Sorey and Christopher D. Farrar

ABSTRACT

This report presents hydrologic and chemical data from the Long Valley 

Hydrologic Advisory Committee Monitoring Program in Long Valley caldera over the 

period 1988-1997. Data were collected by the U.S. Geological Survey at sites to the 

east and west of the geothermal development area at Casa Diablo and precipitation data 

were provided by the U.S. Forest Service. The data are based on both continuous and 

instantaneous measurements of ground-water levels and pressures in wells and a thermal 

pool, discharge of streams, discharge and temperature of springs, annual precipitation at 

the Mammoth Ranger Station, and chemical analyses of selected ions in water samples.
INTRODUCTION

Geothermal energy development in the Long Valley caldera in eastern California 

began in 1985 with startup of the MP-I binary power plant at Casa Diablo (fig. 1). Two 

additional binary plants, MP-II and PLES-I, were added in December 1990, bringing the 

total installed capacity at present to approximately 40 megawatts. The Long Valley 

Hydrologic Advisory Committee (LVHAC) is an advisory committee to the Mono 

County Board of Supervisors and to regulatory agencies that oversee the environmental 

aspects of both geothermal development and development of nonthermal ground water 

in the Long Valley caldera. The LVHAC is guided in this endeavor by existing county, 

state, and federal regulations and permits and by hydrologic monitoring programs 

carried out by the U.S. Geological Survey (USGS) and by Mammoth Pacific, Limited 

Partnership (MPLP), in cooperation with Mono County.

Purpose, Scope, and Format

Results of these hydrologic monitoring programs have been presented in a series 

of unpublished reports issued quarterly since 1988 to the LVHAC by the USGS and 

Mesquite Group, Inc., a consultant to MPLP. The data collected by the geothermal 

operator are proprietary and are not included in this report. Presentation of the 

publically available monitoring data in a single report is needed to enable regulatory 

agencies to assess existing conditions and any changes that may have taken place in the 

hydrologic system since monitoring began.

This report contains graphical and tabular records of hydrologic and chemical 

data collected by the USGS, for most sites over the period of 1988-1997 but at two sites 

over somewhat longer periods. Each graph uses a common time axis and records are 

grouped under several categories, including (1) water levels in wells and spring pools, 

(2) precipitation and streamflow measurements, and (3) other types of data such as 

discharge and temperature of springs and calculated thermal-water discharge in springs 

in Hot Creek Gorge and the Fish Hatchery. A table listing chemical analyses for water 

samples collected by the USGS at various sites is also included.

Most of the data presented here are based on field measurements, expressed in the 

measured units. Values of thermal-water discharge from springs in Hot Creek Gorge 

were calculated from combinations of field measurements of streamflow and laboratory 

analyses of selected chemical constituents, as described in a subsequent section of this 

report.
Descriptions of Study Area and Monitoring Sites

All hydrologic monitoring sites and sites of geothermal and nonthermal groundwater development described in this report are located within the Long Valley caldera 

(figs. 1 and 2). The caldera forms a well-defined surface-water drainage basin with a 

single outlet by way of the Owens River in the southeastern part. A number of perennial 

and intermittent streams drain from the mountains that border the southern and western 

sides of the caldera. Fewer streams drain the mountains to the north because there is 

less precipitation. These peripheral streams drain toward one of two main east-flowing 

streams on the caldera floor, Mammoth Creek on the south and Owens River on the 

north. Lake Crowley is an artificial reservoir formed by Long Valley Dam across the 

Owens River. The reservoir receives water from streams inside the caldera and from 

water imported from the Mono Basin located north of the caldera. The imported water 

is transported 11 miles through a tunnel and discharged into the Owens River about 15 

miles upstream of Lake Crowley. The reservoir is part of the water-supply system for the 

City of Los Angeles.

Wells monitored by the USGS include RDO-8, M-14, SC-2, SQ, CW-3, and CH10B. Water levels are also monitored by the USGS in Hot Bubbling Pool (site HBP), a 

spring-fed hot pool with no surface outlet. Springs for which discharge measurements 

are reported here include Colton Spring (CS) and spring groups AB, CD, and 2,3 at the 

Fish Hatchery (sites FHAB, FHCD, and FH2,3). The discharge of thermal springs in 

Hot Creek Gorge is not measured directly because there are a large number of spring 

vents, some of which discharge subaqueously in the bed of Hot Creek. Instead, the 

combined discharge from all the thermal springs is calculated from measurements of 

chloride and boron flux in Hot Creek, as discussed in a subsequent section. Streamflow 

and water chemistry data are reported for two sites on Mammoth Creek (MC395 and 

MCAF) and two sites on Hot Creek (HCA and HCF). Precipitation data collected by the 

U.S. Forest Service at the Mammoth Ranger Station are also included in this report.

Previous Reports

Hydrologic data from the USGS volcano hazards monitoring program have been 

published in reports by Farrar and others (1985; 1987; 1989) and Howle and Farrar 

(1996). The latter report covers the period 1987-93 and includes data from USGS sites 

in the LVHAC monitoring network. Other significant data compilations include: 

California Department of Water Resources (1967; 1973), Lewis (1974), Willey and 

others (1974), Mariner and Willey (1976), Eccles (1976), and Setmire (1984). In 

addition, the U.S. Forest Service issued annual reports containing hydrologic data for 

1980 through 1985.
ACKNOWLEDGMENTS

Thorn Heller, U.S. Forest Service, provided the precipitation data for the 

Mammoth Ranger Station gage. Gary Sisson was helpful in providing information and 

access to Mammoth Community Water District well M-14. Donald Barnett, 

Intermountain Water Consultants, provided water-level data for well CW-3 for 1988- 

1991. Chris Boone and Dennis Redfern, California Department of Fish and Game, 

cooperated in numerous ways that assisted data collection at the Hot Creek Fish 

Hatchery.
METHODS OF DATA COLLECTION 

Pressures and Water Levels in Wells and Pools

Continuous pressure measurements in thermal wells CH-10B and RDO-8 (figs. 3 

and 6) were made using an above-ground transducer attached to a nitrogen-filled tube 

(bubbler line) open several feet below the water surface in the well. Water-level 

measurements made with an electric sounder were used to calibrate the pressure 

measurements to feet-of-water above the bubbler orifice. Pressures were recorded with 

a data logger at intervals of 15 minutes to 1 hour. The continuous pressure records were 

then used to compute daily mean values that were used for the graphs in this report.

Continuous water-level measurements in well CW-3 (fig. 4) were made using a 

float and shaft encoder in combination with a data logger. Water levels in Hot Bubbling 

Pool (HBP; fig. 5) were measured by several techniques, including a siphon and 

manometer to measure changes in water pressure above the siphon inlet and direct 

measurements of the depth of the pool surface below a datum on the northeast side of 

the pool. The entire record for this site has been converted to reflect changes in water 

level relative to a common arbitrary datum. The pool receives discharge from one or 

more subaqueous spring vents. Changes in water level in the pool are presumed to 

reflect changes in pressure in the subsurface conduit(s) supplying thermal water to the 

pool.

Depths-to-water in cold-water wells M-14, SC-2, and SQ (figs. 7-9) were 

measured on a monthly basis using chalked steel tapes or calibrated electric sounders, 

following procedures described by Garber and Koopman (1968). The water levels were 

measured with reference to a convenient measuring point on the well head and then 

adjusted to depth below land surface.

Flow Measurements in Springs and Streams

Streamflows and spring discharge were measured using velocity meters, weirs, 

and flumes. Procedures used are described by Buchanan and Somers (1969) and 

Kilpatrick and Schneider (1983). For sites where continuous measurements were made 

(HCF, CS, and the Fish Hatchery spring groups), daily mean values of flow were 

computed from stage records and a stage-discharge relation equation (Rantz and others, 

1982; Kennedy, 1983, 1984). Stage was measured using a float, tape, and counter 

weight suspended over a pulley and was recorded electronically using a shaft-encoder 

and data logger, and in some cases on a graphic chart recorder for backup. For sites 

HCF, CS, and FHAB, plots are included of daily mean values of total discharge of all 

vents (figs. 12, 16, and 18). For sites FHAB and FHCD and the combination of these
two sites, plots are also included of instantaneously measured discharge during monthly 

visits (figs. 19, 20, and 21). For site FH2,3, the continuous discharge record was 

converted to monthly mean values for plotting (fig. 22)

Water-Temperature Measurements

Continuous water temperature measurements at the Hot Creek Fish Hatchery were 

made in the AB, CD, and H2,3 spring groups. At FHAB, several spring vents discharge 

subaqueously to a pool about 400 ft long and 10-25 ft wide. From June 1988 to October 

1992, water temperatures were measured with a thermistor placed at the west end of the 

pool, 0.1 ft above the pool floor and above a subaqueous spring vent. The flow of the 

vent declined during January 1992 and within a few weeks there was no measurable 

evidence of discharge. During the period January to March 1992, water at the west end 

of the pool became stagnant and was cooled by winter air temperatures. In March 1992, 

the temperature measurement site was moved to the east end of the pool near the weir at 

the outflow point. At this site, the temperature recorded is a flow-weighted average 

temperature from all the individual vents. This average temperature is affected mainly 

by variations in water temperatures at the spring vents, and to a lesser extent by 

variations in ambient air and soil temperatures. Temperature data from this site and for 

FHCD are plotted in terms of monthly mean values (figs. 19 and 20).

The FHCD site is similar to the FHAB site, in that several spring vents discharge 

subaqueously to a collection pool about 700 ft in length. Temperature measurements at 

this site are made at the west end of the pool using a thermistor placed in the subaqueous 

discharge stream of an individual vent that issues from between basalt boulders lining 

the pool side.

At the FH 2,3 site, subaqueous and subaerial springs discharge to a collection 

pool. A thermistor is placed in a subaerial vent along the southeast side of the pool. 

Temperature data for this sites are also plotted in terms of monthly mean values (fig. 

22).

Chemical Analyses of Water Samples

Water samples for chemical analyses have been collected periodically at various 

sites, including geothermal production wells MBP-1 and MBP-3 at Casa Diablo and 

springs and streams located east of Casa Diablo. Laboratory analyses for samples 

collected by the USGS were performed at the USGS Central Laboratory in Arvada, 

Colorado (table 1).

Water samples from subaerial springs were collected by dipping a polyethylene 

container into the discharge stream as near the vent as possible. Samples from
subaqueous springs and streams were collected using a depth-integrated sampler and 

equal-width stationing. Fluid samples were collected by the USGS from geothermal 

production wells MBP-1 and MBP-3. The combined fluid-vapor samples were 

condensed to a liquid in a coil of stainless steel tubing immersed in an ice-water bath 

and cooled from ~170°C to 30°C.

Aliquots of each water sample were used to determine alkalinity, pH, and specific 

conductance in the field. Aliquots for laboratory analyses were prepared in the field by 

suitable filtering and acidification procedures. Analytical methods used in the USGS 

laboratory are described in a report by Fishman and Friedman (1989).

Thermal-Water Discharge Calculations

Springs in Hot Creek Gorge (HCG) discharge thermal water at temperatures near 

boiling (93 °C) into Hot Creek along an ~0.6 km reach. A chemical-flux technique is 

used to measure the combined flow of all spring vents (fig. 17). Eccles (1976) and 

Sorey and Clark (1981) describe previous applications of this method to Hot Creek, and 

Sorey and others (1994) describe the application at Lassen Volcanic National Park. The 

method is based on the fact that as the chemically concentrated thermal water from hot 

springs mixes with dilute, nonthermal water in the creek, the flux of conservative 

elements such as chloride and boron in the creek increases in proportion to the rate of 

thermal-water input.

For Hot Creek Gorge, values of chloride and boron flux at site HCA above the 

thermal springs and site HCF below the thermal springs were calculated from the 

product of streamflow and average concentration of Cl and B, determined from depthintegrated, equal-width sampling across each stream section. For each element, the 

difference in chemical flux between sites, divided by an assumed concentration of that 

element in the hot-spring water yields a value of thermal-water discharge. Values of 

220 mg/L and 10 mg/L for the Cl and B concentrations in hot-spring water were selected 

as representative of previous analyses of spring samples (see, for example, data for 

spring HC-3 listed in table 1).

Values of thermal-water discharge sites FHAB and FHCD at the Fish Hatchery 

were calculated by a similar method, using measurements of the Cl and B flux in the 

total discharge of each spring group (figs. 19-21). For each element, the flux 

contributed by the thermal-water component was first calculated by subtracting the flux 

contributed by the nonthermal-water component from the total flux. Values of Cl and B 

concentration in the thermal-water component of each spring group were assumed to be 

the same as the average values of thermal water produced from the wells at Casa Diablo: 

Cl = 220 mg/L and B = 10 mg/L. Values of Cl and B in the nonthermal component in 

these springs (Cl = 0.3 mg/L and B = 0.01 mg/L) were estimated from concentrations
in cold springs in the southern part of the caldera. The choice of other values for these 

reference Cl and B concentrations would alter the absolute values calculated for 

thermal-water discharge, but would not significantly alter the calculated changes over 

the monitoring period.
REFERENCES CITED

Buchanan, T.J., and Somers, W.P., 1969, Discharge measurements at gaging stations:

U.S. Geological Survey Techniques of Water-Resources Investigations, book 3,

chap. A8, 65 p. 

California Department of Water Resources, 1967, Investigation of geothermal waters in

the Long Valley area, Mono County: California Department of Water

Resources, 141 p. 

___, 1973, Mammoth Basin water resources environmental study (final report):

California Department of Water Resources, 70 p. 

Eccles, L.A., 1976, Sources of arsenic in streams tributary to Lake Crowley, California:

U.S. Geological Survey Water-Resources Investigations Report 76-36, 39 p. 

Farrar, C.D., Sorey, M.L., Rojstaczer, S.A., Janik, C.J., Mariner, R.H., Winnett, T.L.,

and Clark, M.D., 1985, Hydrologic and geochemical monitoring in Long Valley

caldera, Mono County, California 1982-1984: U.S. Geological Survey WaterResources Investigations Report 85-4183, 137 p. 

Farrar, C.D., Sorey, M.L., Rojstaczer, S.A., Janik, C.J., Winnett, T.L., and Clark, M.D.,

1987, Hydrologic and geochemical monitoring in Long Valley caldera, Mono

County, California, 1985: U.S. Geological Survey Water-Resources

Investigations Report 87-4090, 71 p. 

Farrar, C.D., Sorey, M.L., Rojstaczer, S.A., Steinemann, A.C., and Clark, M.D., 1989,

Hydrologic and geochemical monitoring in Long Valley caldera, Mono County,

California, 1986: U.S. Geological Survey Water-Resources Investigations Report

89-4033, 69 p. 

Fishman, M.J., and Friedman, L.C., 1989, Methods for determination of inorganic

substances in water and fluvial sediments (3rd ed.): U.S. Geological Survey

Techniques of Water-Resources Investigations, book 5, chap. Al, 545 p. 

Garber, M.S., and Koopman, F.C., 1968, Methods of measuring water levels in deep

wells: U.S. Geological Survey Techniques of Water-Resources

Investigations, book 8, chap. Al, 23 p. 

Howle, J.F., and Farrar, C.D., 1996, Hydrologic data for Long Valley caldera, Mono

County, California, 1987-93: U.S. Geological Survey Open-File Report 96-382,

286 p. and 1 diskette. 

Kennedy, E.J., 1983, Computation of continuous records of streamflow: U.S.

Geological Survey Techniques of Water-Resources Investigations, book 3, chap.

A13, 53 p. 

___, 1984, Discharge ratings at gaging stations: U.S. Geological Survey Techniques

of Water-Resources Investigations, book 3, chap. A10, 59 p. 

Kilpatrick, F.A., and Schneider, R.R., 1983, Use of flumes in measuring discharge: U.S.
Geological Survey Techniques of Water-Resources Investigations, book 3, chap.

A14,46p. 

Lewis, R.E., 1974, Data on wells, springs, and thermal springs in Long Valley, Mono

County, California: U.S. Geological Survey Open-File Report, 52 p. 

Mariner, R.H., and Willey, L.M., 1976, Geochemistry of thermal waters in Long Valley

caldera, Mono County, California: Journal of Geophysical Research, v. 81, no. 5,

p. 792-800. 

Rantz, S.E., and others, 1982, Measurements and computations of streamflow: Volume

2, Computation of discharge: U.S. Geological Survey Water-Supply Paper 2175,

631 p. 

Setmire, J.G., 1984, Water-quality appraisal of Mammoth Creek and Hot Creek, Mono

County, California: U.S. Geological Survey Water-Resources Investigations

Report 84-4060, 50 p. 

Sorey, M.L. and Clark, M.D., 1981, Changes in discharge characteristics of thermal

springs and fumaroles in the Long Valley caldera, California, resulting from

earthquakes on May 25-27, 1980: U.S. Geological Survey Open-File Report SI203, 22 p.

Sorey, M.L., Colvard, E.M., and Ingebritsen, S.E., 1994, Measurements of thermalwater discharge outside Lassen Volcanic National Park, California, 1983-94: U.S.

Geological Survey Water Resources Investigations Report 94-4180-B, 45 p. 

U.S. Forest Service, 1980-1985, Water resources data for Mammoth Ranger District,

Inyo National Forest, California: Issued annually. 

Willey, L.M., O'Neil, J.R., and Rapp, J.B., 1974, Chemistry of thermal waters in Long

Valley, Mono County, California: U.S. Geological Survey Open-File Report, 19 p.

10
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Figure 1. Location of Long Valley Caldera study area, Mono County, California.

11
EXPLANATION

Spring 

A Surface-water site

USGS monitoring well

<)> Geothermal production well

Mammoth Ranger Station 

M Casa Diablo well field

Rain gage

Figure 2. Map showing locations of monitoring sites in Long Valley caldera where hydrologic and chemical data 

are collected by the U.S. Geological Survey for the Long Valley Hydrologic Advisory committee. Geothermal production wells MBP-1 and MBP-3 noted in text and tables are shown within the shaded 

region at Casa Diablo.
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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 3. Graph of daily mean values of depth-to-water in observation well RDO-8, 

1988-1994, and instantaneous measurements 1994-1997. Continuous 

monitoring was suspended in this well in 1994.

13
1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 4. Graph of depth-to-water below land surface in observation well CW-3, 1988- 

1997. Data prior to March 11,1992, are based on periodic instantaneous 

measurements (Donald Barnett, Intermountain Water Consultants, written 

commun. 1993). Data after that time are based on daily mean values of depthto-water recorded continuously.

14
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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 5. Graph of daily mean values of water level relative to an arbitrary datum near 

land surface at Hot Bubbling Pool, 1988-1997. Miscellaneous data points for 

periods of missing record are based on instantaneous measurements.

15
70

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 6. Graph of daily mean values of depth-to-water below land surface in observation well CH-1 OB, 1988-1997.

16
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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 7. Graph of instantaneous measurements of water level below land surface in 

observation well M-14, 1988-1997.

17
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130

150

170

190

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SC-2

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 8. Graph of instantaneous measurements of water level below land surface in 

observation well SC-2, 1988-1997.

18
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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 9. Graphs at two different scales of instantaneous measurements of depth to water 

in observation well SQ, 1988-1997.

19
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Monthly precipitation at Mammoth Lakes Ranger Station 

I | July 1987-June 1997 \

1988 1989 1990 1991 1992 1993 1994 1995 1996

CALENDAR YEAR

I I \ T I I I I I 

Total annual precipitation at Mammoth Lakes Ranger Station

PRECIPITATION YEAR

1988 1989 1990 1991 1992 1993 1994 

PRECIPITATION YEAR

1995 1996 1997

Figure 10. Graphs of monthly precipitation and total annual precipitation in precipitation 

years (July 1-June 30) at Mammoth Lakes Ranger Station for 1988-1997.

20
16

Monthly precipitation at 

1988

Mammoth Lakes Ranger Station 

December 1997

0

50

45

40

£ 35 

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

CALENDAR YEAR

II I I I II I I 

Total precipitation at Mammoth Lakes Ranger Station

CALENDAR YEAR

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

CALENDAR YEAR

Figure 11. Graphs of monthly precipitation and total annual precipitation in calendar years 

(January 1-December 31) at Mammoth Lakes Ranger Station for 1988-1997.

21
DISCHARGE (cfs) DISC

to 

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 13. Graph of instantaneous measurements of discharge in Hot Creek above the 

thermal springs in the gorge (HCA), 1988-1997.

23
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° 30

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 14. Graph of instantaneous measurements of discharge in Mammoth Creek at 

Highway 395 (MC395), 1988-1997.

24
I

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90

80

70

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Figure 15. Graph of instantaneous measurements of discharge in Mammoth Creek above 

the input from the Fish Hatchery (MCAF), 1988-1997.

25
0.05

0.04

32 0.03 15

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COLTON SPRING -

DRY

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 16. Graph of daily mean discharge and instantaneous discharge measurements at 

Colton Spring (CS), 1988-1997.

26
350

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1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

LJJ

275

250

O 225

CO

Q 

200

175

150

Hot Creek Gorge 

Thermal Springs

12

11

10 0

CO 

O

3J 

CD 

m

8 I

72 73 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

Figure 17. Graphs of calculated thermal-water discharge from hot springs in Hot Creek 

Gorge (HCG), 1988-1997 and 1972-1997.

27
to

oo

DISCH

CO

oo 

oo§CO

CO 

CO

CO

IS

CO 

CO 

CO

CO 

CO 

Ol

CO 

CO 

O) 8
81

po

CO CO

20

16

12

8

- Instantaneous 

Discharge

FHAB

22

20

18

LU 16 

Q_

oo 

LJJ

LJJ

14

12

0.5

0.4 

0.3 

0.2 

0.1 

0.0

I M I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I

- Temperature

upper site weir site

Thermal-water

Discharge

FHAB

FHAB

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 19. Graphs of instantaneous total discharge, monthly mean temperature, and

calculated thermal-water discharge, Fish Hatchery spring group AB (FHAB), 

1988-1997.

29
u>

O

CD 

K>

O

p

.

2 o

IT B-.

I

I *>f

 B

09

^ 3

81 

SI

p 

o

THERMAL-WATER 

DISCHARGE (cfs)

p p p p o 

io ro oo

TEMPERATURE (°C)

00 O)

o

Cx>

oicDoibi oi 

CO 

00 

00

CO

§

CO 

CO

CO 

CO

GO

CO

Ol

CO 

CO 

O)

CO 

CO

1111111 =

1 I I

CO1

 D 

CD

I 

I

I I II I I I

Tl 

O

O

I I
28

24

§1

coco

^ 7^ O

4

0

1.0

0.8 

0.6

Instantaneous 

Discharge

30

DC 

LU

DC 

HI

LU 

O 

DC 

LU 

Q.

o.4

O

22

° 0.2

0.0

7

6

5

4

3

2

1

0

Thermal-water 

Discharge

o

11 irriTi [iiriiiiri r 1111 rri 111 in 11111 iirn r 111111111111111111111111111111111111111111111111111111 M 111111111111111111

_ Percent Thermal-water FHAB 

Discharge +

FHCD.

1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 21. Combined instantaneous total discharge, calculated thermal-water discharge, 

and percent thermal water, Fish Hatchery spring groups AB and CD, 1988- 

1997.

31
I

LU 

O 

CC 

<

O 

CO

Q

0

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I II I I I I I I M I I I I I I I I I I I I I I I I I I I I II I I I I II 1 I I I I I I I I I I II I I I I I I I

_ Discharge FH2,3

12.0

11.6

O

Hi cc 11 p ' ' * 

LJU

10.8

10.4

10.0

_ Temperature

I 1111 " 1 ""!

FH2,3 _

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Figure 22. Graphs of average monthly discharge and temperature at Fish Hatchery spring 

group 2,3 (FH2,3), 1988-1997.

32
Table 1. Chemical analyses of water samples collected and analyzed by the U.S. Geologic

reported in mg/L; indicates no data.

U)

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

Si02

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (% )

618O (%0)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MBP-1 

07-13-88

--

163.0

--

1700

6.5

335

341

5.3

0.10

350

23

250

120

11

240

0.44

0.01

1.8

9.9

0.012

2.4

0.006

0.17

-117

-14.7

1.3

1250

1220

MBP-1 

01-12-89

~

163.0

--

1700

6.8

348

340

5.7

0.26

330

30

250

110

9.6

240

0.37

<0.01

1.2

9.9

0.013

2.7

0.018

0.0045

0.19

~

-

--

1200

1200

MBP-1 

07-21-89

--

163.0

--

1680

6.8

344

334

5.1

0.15

340

-

250

120

10

230

0.32

0.02

1.7

11

0.008

2.6

0.013

0.001

0.17

-117

-14.7

0.9

1200

--

MBP-1 

01-10-90

--

--

1630

1720

6.5

347

337

5.3

0.08

340

33

240

120

11

230

0.33

0.02

1.8

10

0.031

2.4

0.018

0.0068

--

-119

-14.8

1.1

1210

1200

MBP-1 

07-10-90

-

158.0

1630

1750

6.8

--

351

7.9

0.11

360

30

260

120

11

220

0.28

0.01

0.51

10

0.021

2.4

0.025

0.0021

-

-117

-14.7

1.0

1250

1230

MBP-3 

07-13-88

--

169.0

--

1630

6.5

360

365

5.8

0.19

340

22

240

110

9.8

240

0.33

0.03

1.7

9.6

0.29

2.4

0.006

-

0.20

-119

-14.8

1.6

1220

1200

MBP-3 

01-12-89

-

168.0

--

1670

6.4

443

357

2.1

0.20

330

30

240

110

8.6

230

0.25

<0.01

0.42

9.5

0.009

2.6

0.009

0.0024

0.086

-

--

-

1200

1230

MBP-3 

07-21-89

--

163.5

-

1700

6.1

354

367

5.9

0.25

330

30

260

110

10

230

0.22

<0.01

1.0

9:6

0.022

2.7

0.02

0.0010

0.19

--

~

1.3

1240

1200

MBP-3 

01-10-90

-

~

1610

1730

6.7

387

367

6.1

0.22

340

35

240

120

10

230

0.25

0.01

0.26

10

0.018

2.5

0.025

0.0012

-

-118

-15.0

1.4

1230

1230

MBP-3 

07-10-90

-

161.0

1710

1750

6.3

~

377

7.4

<0.02

330

31

240

110

8.0

210

0.21

<0.01

0.34

10

0.028

2.6

0.027

0.0052

-

-116

-14.7

1.3

1230

--
Table 1. continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (iab)

Ca

Mg

Na

K

Ci

u> SO4

* F

SI02

N

P

As

B

Fe

Li

Mn

Hg

Sr

5D (%0)

518O (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

CS 

07-14-88

0.03

93.0

~

1910

8.5

402

389

1.5

<0.10

370

31

270

130

9.5

260

0.06

0.11

2.2

11

<0.003

2.8

0.006

0.0003

0.11

--

-

-

1360

-

CS

01-12-89

0.02

92.5

-

1870

8.4

390

383

1.5

0.02

370

31

270

130

11

250

0.05

0.09

2.1

11

<0.003

3.0

0.005

0.0003

0.11

-

-

--

1360

1310

CS

07-18-89

0.03

93.0

-

1910

8.3

384

410

1.6

0.04

390

32

270

140

11

260

0.06

0.10

1.8

11

0.004

3.1

0.006

0.0002

0.11

-

-

~

1250

1350

CS 

01-10-90

0.04

93.0

--

1930

8.6

408

400

1.5

<0.10

390

34

260

140

12

260

0.08

0.10

1.7

11

0.009

2.9

0.005

0.0005

--

-114

-14.2

-

1370

--

CS 

07-18-90

0.04

93.0

~

1890

8.6

403

399

1.4

<0.20

380

29

230

120

9.1

250

<0.01

0.11

1.2

12

<0.003

3.0

0.005

0.0003

-

-113

-14.3

0.8

1240

--

CS

01-18-91

--

92.5

~

1860

8.8

386

382

1.3 .

<0.10

380

28

260

120

12

250

0.02

0.06

1.6

12

0.008

4.4

0.004

0.0005

~

- '

-

-

1340

-

CS

04-17-91

--

92.5

-

1240

8.7

357

354

1.2

0.02

370

29

260

140

11

260

0.10

0.28

1.8

12

0.011

2.9

0.004

0.0001

~

-115

-13.9

-

1410

1300

FH-AB 

07-11-88

6.7

16.0

270

272

7.1

~

109

14

10

26

5.0

10

14

0.2

60

0.02

0.15

0.056

0.44

0.003

0.090

<0.001

<0.0001

0.091

-114

-15.2

63

201

207

FH-AB 

10-18-88

6.7

16.5

267

272

7.2

114

112

14

11

29

5.2

11

13

0.3

61

<0.01

0.14

0.051

0.47

0.003

0.090

<0.001

<0.0001

0.096

-

-

~

203

215

FH-AB 

01-10-89

5.1

16.0

272

280

7.1

116

112

14

10

26

6.0

11

14

0.3

60

<0.01

0.16

0.056

0.46

<0.003

0.10

<0.001

<0.0001

0.097

-

-

~

192

214
Table 1 . continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

u> SO4

^ F

SIO2

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (%,)

618O (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-AB 

04-24-90

4.8

17.0

290

291

7.3

103

113

14

10

29

6.3

14

14

0.3

62

<0.01

0.15

0.052

0.59

0.003

0.10

<0.001

<0.0001

--

-115

-15.5

-

209

214

FH-AB 

07-17-90

5.0

16.5

273

301

7.2

111

112

15

10

31

6.4

14

9.5

0.2

65

0.01

0.16

0.059

0.68

0.005

0.11

0.001

<0.0001

-

-114

-15-4

52

215

220

FH-AB 

10-17-90

3.8

17.0

281

298

7.1

113

114

14

10

29

6.0

18

14

0.3

63

0.02

0.14

0.05

0.66

<0.003

0.10

<0.001

0.0001

-

-115

-15.3

~

206

225

FH-AB 

01-16-91

3.4

17.5

295

305

7.2

109

114

15

11

30

6.1

18

18

0.3

62

0.01

0.13

0.046

0.69

0.004

0.10

<0.001

<0.0001

--

-115

-15.5

45

203

227

FH-AB 

04-16-91

3.4

16.5

302

311

7.1

113

116

15

11

30

6.2

16

16

0.2

63

<0.01

0.13

0.045

0.68

<0.003

0.11

<0.001

<0.0001

-

-115

-15.5

~

227

229

FH-AB 

07-23-91

7.0

16.5

264

274

7.1

102

100

13

9.0

29

5.6

13

14

0.3

62

0.03

0.15

0.077

0.64

0.005

0.10

<0.001

<0.0001

-

-111

-15.2

~

194

210

FH-AB 

10-23-91

3.9

17.5

275

283

7.2

105

109

14

9.2

26

6.7

15

17

0.3

61

0.01

0.13

0.038

0.62

0.006

0.10

<0.001

<0.0001

-

-116

-15.4

-

196

216

FH-AB 

01-14-92

3.1

17.0

274

282

7.4

106

108

13

9.3

28

6.0

12

18

0.3

66

<0.01

0.15

0.05

0.62

<0.003

0.10

<0.001

<0.0001

~

-115

-15.4

-

200

219

FH-AB 

04-15-92

2.9

17.0

276

285

7.4

108

107

14

9.9

29

5.8

14

19

0.4

61

<0.01

0.16

0.053

0.62

0.004

0.10

<0.001

<0.0001

--

-116

-15.5

-

216

222

FH-AB 

07-07-92

4.4

17.5

268

270

7.2

101

102

12

8.8

28

5.9

16

16

0.3

63

0.02

0.15

0.047

0.70

<0.003

0.10

<0.001

<0.0001

~

-114

-15.3

-

168

213
Table 1. continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SO (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

Si02

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (%o)

618O (%o)

Tritium (T.U.)

TDS (lab)

TDS(sum)

FH-AB 

10-13-93

6.6

17.5

239

241

7.2

97

100

12

8.9

22

5.1

7.5

12

0.3

53

0.03

0.14

0.047

0.39

0.005

0.070

<0.001

<0.0001

-

-

-

-

182

181

FH-AB 

01-11-94

4.0

17.5

254

261

7.3

97

105

12

8.8

26

5.8

9.4

13

0.3

60

0.01

0.11

0.044

0.43

0.007

0.10

O.001

O.0001

-

--

--

-

200

196

FH-AB 

04-12-94

2.9

18.0

264

272

7.3

107

108

12

8.6

25

5.3

10

13

0.3

56

0.02

0.13

0.044

0.47

0.003

0.090

0.001

O.0001

-

-

-

-

200

196

FH-AB 

07-12-94

5.2

18.0

232

236

7.3

90

93

10

7.7

23

5.9

9.9

11

0.3

56

<0.01

0.12

0.043

0.51

0.004

0.090

<0.001

O.0001

-

~

-

~

164

179

FH-AB 

10-19-94

2.8

18.0

267

278

7.2

101

141

13

9.2

28

6.0

11

13

0.3

60

<0.02

0.14

0.052

0.53

<0.003

0.10

<0.001

<0.0001

~

~

--

--

192

204

FH-AB 

10-19-94

-

~

278

~

-

160

13

9.1

28

6.0

12

12

0.3

59

<0.02

0.14

0.052

0.54

O.003

0.10

<0.001

O.0001

-

~

-

-

192

238

FH-AB 

01-17-95

2.9

18.0

291

292

7.2

114

120

14

10

28

6.0

10

12

0.3

61

<0.02

0.15

0.045

0.49

<0.003

0.11

<0.001

<0.0001

-

-

-

~

208

212

FH-AB 

04-18-95

6.0

17.0

287

295

7.2

115

119

14

10

27

5.9

11

11

0.3

59

<0.02

0.15

0.046

0.52

0.012

0.10

O.001

O.0001

~

-

-

-

214

212

FH-AB 

06-20-95

-

16.5

217

226

7.3

-

92

10

7.5

22

4.9

8.2

9.4

0.3

59

0.02

0.12

0.042

0.41

0.011

0.090

O.001

-

-

-

-

-

166

180

FH-AB 

07-11-95

13

16.0

212

216

7.2

85

89

9.4

7.2

21

4.5

7.1

9.1

0.4

58

0.02

0.14

0.043

0.36

0.013

0.080

<0.001

O.0001

~

~

-

~

164

171
Table 1 .--continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T('C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

Si02

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (%»)

6180 (%,)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-AB 

01-16-97

8.1

16.7

257

261

7.2

-

-

13

10

23

5.3

5.2

11

0.3

53

0.02

0.13

0.038

0.29

0.003

0.080

O.0001

O.0001

~

--

~

-

-

-

FH-AB 

07-15-97

11

16.9

234

243

7.2

106

106

12

9.0

21

5.3

4.3

9.7

0.3

54

-

0.11

0.034

0.27

O.003

0.0

0.0001

O.0001

-

-

-

-

~

--

FH-CD 

10-21-88

7.4

15.0

185

233

7.3

108

103

12

9.4

24

4.4

4.5

11

0.3

57

0.02

0.16

0.057

0.23

0.008

0.070

0.001

O.0001

0.069

-

-

--

181

190

FH-CD 

01-10-89

8.2

14.0

229

241

7.3

108

104

12

9.0

22

5.1

5.6

11

0.3

57

0.02

0.18

0.062

0.24

0.008

0.080

0.003

O.0001

0.07

-

-

~

171

189

FH-CD 

04-12-89

9.3

15.0

231

243

7.3

108

106

12

9.0

23

4.7

5.6

11

0.3

58

O.01

0.18

0.054

0.24

0.007

0.090

O.001

O.0001

0.07

-

~

~

181

191

FH-CD 

07-20-89

9.5

15.5

236

242

7.2

108

105

12

9.0

23

5.1

5.7

10

0.4

59

0.02

0.17

0.049

0.26

0.006

0.080

0.003

0.0001

0.072

~

~

--

188

191

FH-CD 

10-19-89

6.2

15.0

232

244

7.5

-

104

12

8.6

23

4.6

5.4

11

0.3

57

0.02

0.17

0.054

0.27

0.007

0.070

O.001

O.0001

0.072

~

-

-

154

186

FH-CD 

01-08-90

8.6

15.5

213

249

7.3

105

105

12

9.0

24

5.5

5.2

11

0.3

60

0.04

0.17

0.030

0.26

0.016

0.070

0.001

O.0001

--

-117

-15.9

-

180

193

FH-CD 

04-24-90

7.8

15.5

243

245

7.4

99

106

12

9.1

25

5.2

7.2

10

0.3

60

O.01

0.19

0.054

0.27

0.007

0.070

O.001

O.0001

-

-117

-15.8

-

182

190

FH-CD 

07-17-90

8.8

15.5

230

246

7.2

104

105

12

8.8

24

5.1

7.0

11

0.1

59

0.01

0.19

0.055

0.28

O.003

0.080

0.001

O.0001

~

-117

-15.8

47

187

192
Table 1 .--continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

u> Cl

oo

SO4

F

SI02

N

P

As

B

Fe

LI

Mn

Hg

Sr

5D(%0)

6180(%.)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-CD 

10-23-91

7.3

15.5

239

247

7.5

111

108

12

9.4

26

5.2

6.1

13

0.3

59

0.03

0.11

0.046

0.26

<0.003

0.070

<0.001

<0.0001

--

-116

-15.7

~

173

200

FH-CD 

01-14-92

7.5

16.0

243

251

7.5

106

109

12

9.2

24

5.1

7.3

15

0.4

62

<0.01

0.18

0.050

0.30

0.007

0.080

0.002

<0.0001

-

-115

-15.6

~

170

201

FH-CD 

04-15-92

7.5

16.0

240

252

7.7

109

106

12

9.3

24

5.1

6.4

13

0.4

55

0.01

0.19

0.056

0.30

0.003

0.070

<0.001

<0.0001

~

-117

-15.8

' -

194

193

FH-CD 

07-07-92

8.0

16.5

246

248

7.5

106

108

12

9.1

25

5.2

6.5

12

0.4

58

0.03

0.18

0.054

0.32

0.003

0.080

<0.001

<0.0001

--

-116

-15.7

~

182

194

FH-CD 

10-20-92

7.1

15.5

244

252

7.4

107

110

12

9.3

25

5.3

5.9

11

0.4

58

0.03

0.18

0.053

0.29

<0.003

0.080

0.002

<0.0001

-

-116

-15.7

-

204

194

FH-CD 

01-26-93

7.1

16.0

250

259

7.6

113

113

13

10

27

5.3

5.9

11

0.3

62

<0.01

0.18

0.055

0.29

0.005

0.080

<0.001

<0.0001

-

-115

-15.8

~

190

204

FH-CD 

04-13-93

9.0

15.5

255

258

7.5

107

111

14

9.5

23

5.2

6.7

11

0.3

58

0.02

0.18

0.051

0.30

0.012

0.080

<0.001

<0.0001

-

-117

-15.8

-

180

195

FH-CD 

07-13-93

13

17.0

214

223

7.4

-

98

11

8.1

22

4.5

4.2

11

0.3

58

0.03

0.18

0.046

0.25

<0.003

0.070

0.001

<0.0001

-

-116

-15.8

-

168

180

FH-CD 

10-13-93

10

15.0

237

239

7.2

104

108

11

8.0

23

5.3

4.3

11

0.3

58

0.04

0.15

0.040

0.21

<0.003

0.090

<0.001

<0.0001

-

-

~

~

174

185

FH-CD 

01-11-94

8.5

15.5

242

249

7.5

102

110

12

9.3

24

5.2

4.6

11

0.3

56

0.01

0.15

0.050

0.24

<0.003

0.080

<0.001

<0.0001

-

--

-

-

184

185
Table 1 . continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T('C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

SI02

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (%o)

6180 (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-CD 

04-18-95

6.6

15.0

249

257

7.3

108

113

13

9.4

23

5.1

5.2

9.5

0.3

56

<0.02

0.17

0.048

0.25

0.007

0.080

0.001

<0.0001

--

~

--

--

186

190

FH-CD 

04-18-95

6.6

15.0

250

258

7.3

109

114

13

9.3

23

5.1

5.2

9.4

0.3

56

<0.02

0.17

0.049

0.25

0.005

0.080

0.001

<0.0001

-

-

--

-

186

190

FH-CD 

07-11-95

10

15.5

223

228

7.3

98

100

11

8.5

21

4.7

3.8

10

0.3

55

0.02

0.15

0.045

0.20

0.006

0.070

<0.001

<0.0001

~

-

-

-

168

176

FH-CD 

01-24-96

8.0

14.5

234

245

7.3

107

111

13

10

21

4.8

3.8

8.8

0.3

54

<0.02

0.14

0.043

0.19

0.003

0.080

0.001

O.0001

-

~

~

-

172

182

FH-CD 

07-16-96

-

~

-

--

-

--

-

12

9.7

21

4.4

2.8

9.7

0.3

54

-

-

0.040

0.18

<0.003

--

O.001

-

--

-

-

180

-

FH-CD 

07-16-96

9.8

15.5

232

239

7.3

87

107

12

9.1

21

4.8

2.9

10

0.3

55

0.04

0.17

0.037

0.18

<0.003

0.068

0.001

<0.0001

--

--

~

-

150

169

FH-CD 

01-16-97

8.6

14.7

238

243

7.1

-

12

9.3

22

5.0

3.3

10

0.3

51

<0.02

0.14

0.044

0.19

0.004

0.070

0.001

<0.0001

--

--

-

-

--

-

FH-CD 

07-15-97

8.7

15.5

236

245

7.2

111

111

13

9.2

21

5.1

2.8

9.7

0.3

52

<0.02

0.13

0.035

0.18

<0.003

0.0

<0.001

<0.0001

--

--

--

--

-

--

FH-2,3 

07-11-88

3.5

11.0

193

194

7.2

--

75

16

5.6

13

3.0

6.2

12

0.3

39

0.01

0.08

0.020

0.12

0.004

0.040

<0.001

<0.0001

-

-120

-16.2

34

141

142

FH-2,3 

10-18-88

3.2

11.0

187

188

7.1

--

75

16

5.9

15

3.2

5.4

12

0.2

39

<0.01

0.09

0.022

0.090

0.043

0.040

<0.001

<0.0001

--

-

--

143

143
Table 1 . continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T('C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

4^CI

o

SO4

F

SI02

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (% )

618O (%»)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-2,3 

01-09-90

3.3

11.0

179

196

7.2

73

76

16

5.3

14

3.6

5.2

6.0

0.2

40

0.02

0.09

0.018

0.10

0.008

0.040

<0.001

<0.0001

-

-123

-16.2

~

134

136

FH-2,3 

04-24-90

3.0

11.0

199

202

7.2

74

76

16

5.6

15

3.5

7.1

13

0.2

40

<0.01

0.10

0.023

0.11

<0.003

0.040

<0.001

<0.0001

-

-119

-16.2

~

147

149

FH-2,3 

07-17-90

3.9

11.5

192

203

7.1

77

78

17

5.5

15

3.4

8.0

11

0.1

40

0.02

0.10

0.021

0.10

<0.003

0.050

<0.001

<0.0001

«

-120

-16.0

32

150

149

FH-2,3 

10-16-90

3.4

11.5

166

200

7.1

79

78

16

5.4

14

3.4

7.3

12

0.4

39

<0.02

<0.09

0.024

0.10

<0.003

0.040

0.002

<0.0001

-

-119

-16.0

-

129

146

FH-2,3 

01-16-91

-

11.5

177

191

7.2

-

77

16

5.2

14

3.2

5.7

11

<0.1

38

<0.01

0.10

0.020

0.10

<0.003

0.040

<0.001

<0.0001

-

-118

-16.2

28

105

141

FH-2,3 

04-16-91

3.0

11.0

190

199

7.1

76

76

16

5.4

15

3.5

6.9

11

0.2

39

<0.01

0.08

0.022

0.11

<0.003

0.040

<0.001

<0.0001

-

-121

-16.2

~

146

146

FH-2,3 

07-23-91

3.9

13.0

198

206

7.0

79

79

17

5.7

16

3.5

7.9

13

0.2

39

0.02

0.09

0.022

0.12

0.004

0.040

<0.001

<0.0001

-

-117

-16.1

-

140

152

FH-2,3 

10-23-91

2.7

11.5

201

207

7.2

75

81

17

5.8

16

3.7

8.0

12

0.2

39

0.01

0.08

0.019

0.11

<0.003

0.040

<0.001

<0.0001

~

-120

-110.0

-

142

151

FH-2,3 

01-14-92

2.7

11.5

200

206

7.3

79

81

17

5.6

15

3.5

7.0

12

0.2

41

<0.01

0.10

0.021

0.11

<0.003

0.040

<0.001

<0.0001

-

-120

-15.9

-

116

150

FH-2,3 

04-15-92

3.0

11.0

210

218

7.4

82

80

18

6.2

16

3.5

9.4

12

0.1

38

<0.01

0.10

0.021

0.12

<0.003

0.040

<0.001

<0.0001

~

-121

-16.0

~

158

156

0

2

2

-1

1

1
Table 1 .--continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

SO4

F

SiO2

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (%»)

618O (%.)

Tritium (T.U.)

TDS (lab)

TDS (sum)

FH-2,3 

07-13-93

4.2

11.5

230

241

7.1

-

95

21

6.9

17

3.8

8.6

13

0.2

41

0.02

0.10

0.020

0.13

<0.003

0.040

<0.001

<0.0001

--

-118

-16.0

-

164

171

FH-2,3 

10-13-93

3.5

12.0

234

237

7.1

92

95

19

6.5

17

3.9

8.3

12

0.2

38

0.03

0.10

0.022

0.11

0.004

0.040

<0.001

<0.0001

~

--

-

-

166

163

FH-2,3 

01-11-94

3.0

11.5

219

227

7.3

83

90

18

6.2

16

4.1

7.5

12

0.2

38

<0.01

0.09

0.015

0.11

<0.003

0.050

<0.001

<0.0001

~

-

-

~

152

154

FH-2,3 

04-12-94

3.2

11.0

216

226

7.3

87

98

18

6.1

16

3.7

8.3

12

0.2

38

0.02

0.09

0.021

0.12

0.009

0.040

<0.001

<0.0001

-

~

~

-

148

156

FH-2,3 

07-12-94

4.1

11.0

221

225

7.3

88

90

18

6.1

16

4.1

7.4

11

0.2

38

<0.01

0.09

0.023

0.13

<0.003

0.050

<0.001

<0.0001

-

-

-

-

132

156

FH-2,3 

01-18-95

3.1

10.0

224

226

7.3

85

88

18

6.1

17

3.6

8.3

11

0.2

40

<0.02

0.11

0.025

0.12

<0.003

0.040

<0.001

<0.0001

-

-

-

~

152

157

FH-2,3 

04-18-95

3.3

11.0

236

244

7.1

91

94

19

6.4

17

3.9

10

10

0.2

39

<0.02

0.11

0.019

0.12

<0.003

0.040

<0.001

<0.0001

~

--

-

~

168

163

FH-2,3 

07-11-95

4.1

11.0

237

244

7.1

94

97

20

6.7

17

3.9

8.7

11

0.2

40

0.02

0.10

0.023

0.12

<0.003

0.050

<0.001

<0.0001

-

-

-

~

158

167

FH-2,3 

01-24-96

3.7

11.5

220

231

7.2

91

95

18

6.6

16

3.8

6.8

9.8

0.2

39

<0.02

0.10

0.021

0.11

<0.003

0.040

<0.001

<0.0001

~

~

-

-

154

157

FH-2,3 

07-16-96

-

--

-

-

-

-

18

6.6

17

3.7

7.2

11

0.2

40

-

-

0.024

0.12

<0.003

-

<0.001

~

-

"

-

158

-
Table 1 . continued.

K)

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

SO4

F

SIO2

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D(%o)

618O (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

HC-3 

07-18-90

-

95.5

-

1780

8.1

503

475

3.2

0.21

380

24

220

94

9.9

140

0.04

0.06

1.0

9.9

<0.003

2.3

0.002

0.0002

-

-119

-15.1

0.9

1200

1190

HC-3 

04-16-92

-

81.0

--

1810

7.6

-

475

3.2

0.07

370

12

230

110

12

160

0.11

0.07

1.1

10

0.007

4.0

0.004

0.0002

-

-120

-14.7

-

1200

1200

HCF 

07-12-88

57

34.0

470

471

7.8

140

147

12

5.5

78

7.0

40

24

1.6

58

<0.01

0.16

0.23

1.7

0.017

0.45

0.010

0.0001

0.11

~

-

~

323

315

HCF 

07-19-89

42

37.0

586

559

7.7

171

173

13

5.7

98

8.2

52

28

2.4

67

<0.01

0.17

0.27

2.3

0.010

0.60

0.009

<0.0001

0.12

-

-

-

388

381

HCF 

11-19-97

51

25.5

521

520

7.8

171

168

13

6.3

85

7.7

42

24

2.0

59

<0.02

0.14

0.24

1.9

<0.010

0.0

0.021

<0.0001

--

~

-

-

~

-

LHC-SP 

07-14-88

0.12

83.0

~

1860

7.0

590

599

23

0.58

370

24

200

95

7.8

90

0.15

0.04

0.59

8.5

0.031

2.6

0.21

0.0004

0.58

-

-

-

1250

1180

LHC-SP 

01-13-89

0.12

82.5

-

1900

6.8

630

592

22

0.55

350

24

200

98

7.2

81

0.14

0.02

0.85

8.5

0.036

2.7

0.20

0.0005

0.56

~

~

-

1230

1170

LHC-SP 

07-17-89

0.03

82.5

-

1920

6.7

631

603

23

0.62

390

22

200

100

7.9

88

0.11

0.03

0.30

8.8

0.036

2.9

0.20

<0.0001

0.54

-

-

~

1260

1220

LHC-SP 

01-09-90

0.12

82.5

2100

1960

7.1

574

594

23

0.65

400

30

200

100

8.5

87

0.15

0.04

0.70

9.0

0.037

2.7

0.21

0.0001

-

-124

-15.8

-

1240

1210

LHC-SP 

07-18-90

0.12

83.0

-

1920

7.0

595

595

23

0.69

390

28

200

98

8.4

87

0.11

0.04

0.61

8.8

0.015

2.8

0.21

0.0001

~

-122

-15.8

<0.3

1250

1210
Table 1. continued.

u>

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

Si02

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (%0)

618O (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

LHC-SP 

07-08-92

-

82.5

1920

1890

7.7

600

570

23

0.62

400

27

200

100

5.8

87

0.11

0.04

0.69

9.1

0.050

2.8

0.20

<0.0001

-

-123

-15.7

-

1200

1220

LHC-SP 

01-26-93

0.13

83.0

1900

1920

7.1

585

599

23

0.63

400

22

200

100

8.7

90

0.14

0.04

0.78

9.2

0.036

2.7

0.21

0.0002

-

-124

-15.7

--

1220

1210

LHC-SP 

07-15-93

0.13

82.5

1910

1940

7.8

~

602

23

0.62

390

24

190

100

8.7

86

0.12

0.03

0.65

9.7

0.035

2.9

0.20

<0.0001

-

-

-

1230

1200

LHC-SW 

07-18-90

0.44

52.5

--

1980

8.1

626

609

20

0.60

420

28

210

100

8.7

93

0.02

0.04

0.71

9.1

0.016

3.0

0.17

<0.0001

--

-123

-15.0

<0.3

1280

1270

LHC-SW 

07-08-92

-

54.0

1940

1960

8.4

611

597

16

0.50

440

28

210

110

9.7

-

0.02

0.03

0.74

9.6

0.02

2.7

0.060

<0.0001

--

-

-

--

1250

1190

MC-395 

07-13-88

13

13.0

82

82

7.9

42

30

7.8

2.4

4.8

1.1

0.30

3.1

0.2

9.4

0.01

0.02

0.003

<0.010

0.015

0.030

0.002

<0.0001

0.028

--

-

-

50

55

MC-395 

10-18-88

3.5

5.5

140

144

8.2

73

70

11

5.6

9.3

2.3

0.40

5.8

0.1

17

<0.01

0.03

0.004

<0.010

0.020

0.030

0.002

<0.0001

0.046

-

--

-

95

95

MC-395 

01-11-89

1.0

0.0

165

167

7.6

78

79

13

6.3

11

2.6

0.40

6.8

0.3

30

<0.01

0.05

0.004

0.020

0.017

0.040

<0.001

<0.0001

0.052

-

~

-

109

117

MC-395 

04-11-89

9.1

5.5

143

152

7.7

69

72

11

6.0

11

2.4

0.40

6.3

0.2

27

0.01

0.06

0.021

0.010

0.026

0.040

0.002

<0.0001

0.046

-

--

-

108

106

MC-395 

07-18-89

9.0

13.5

90

93

7.2

49

43

8.5

2.9

5.8

1.2

0.30

4.0

0.1

11

0.02

0.01

0.004

<0.010

0.037

0.020

0.004

<0.0001

0.032

-

-

--

86

63
Table 1. continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T('C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

Si02

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D(%»)

6180 (%»)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MC-395 

10-16-90

2.0

8.0

103

141

8.1

64

68

11

5.0

9.6

2.2

1.2

4.3

0.3

18

<0.05

0.04

0.003

<0.010

0.022

0.020

0.003

<0.0001

-

--

--

--

81

91

MC-395 

01-17-91

3.2

0.0

165

174

8.0

81

85

14

6.4

12

2.8

0.20

5.9

0.1

30

0.04

0.04

0.004

0.010

0.016

0.030

0.004

<0.0001

--

--

--

--

99

120

MC-395 

04-16-91

2.4

1.0

161

179

8.1

82

85

13

6.7

13

2.8

0.20

7.4

0.1

30

<0.01

0.04

0.004

<0.010

0.028

0.030

0.002

<0.0001

-

--

--

--

109

123

MC-395 

07-22-91

14

17.0

71

73

7.3

35

35

7.8

2.1

4.9

1.0

0.10

3.1

0.1

12

0.02

0.01

0.004

0.020

0.035

0.020

0.005

<0.0001

-

--

-

--

46

-

MC-395 

10-22-91

3.6

9.5

119

123

8.3

63

60

9.7

4.4

7.5

1.9

0.70

5.1

0.2

14

0.02

0.03

0.004

<0.010

0.023

0.020

0.004

<0.0001

--

-104

-14.0

~

66

82

MC-395 

01-13-92

4.4

0.5

137

147

8.2

70

72

12

5.1

9.4

2.1

0.50

5.3

0.2

27

0.01

0.04

0.002

<0.010

0.012

0.030

<0.001

<0.0001

-

-

-

-

95

104

MC-395 

04-14-92

3.7

10.0

159

173

8.4

80

81

12

6.8

13

2.6

0.10

6.6

0.1

28

0.02

0.06

0.005

0.020

0.020

0.040

0.002

<0.0001

--

-

-

-

108

118

MC-395 

07-06-92

10

15.0

88

88

8.1

42

42

8.3

2.6

5.3

1.1

0.10

3.5

0.1

10

0.01

0.02

0.002

<0.010

0.029

0.010

0.003

<0.0001

--

-

~

-

48

-

MC-395 

10-19-92

4.1

9.5

121

125

8.1

62

60

11

4.3

7.9

2.0

0.40

4.3

0.1

14

0.02

0.02

0.003

<0.010

0.020

0.020

0.004

<0.0001

--

-

-

--

99

82

MC-395 

01-25-93

-

0.0

121

129

7.9

-

61

11

4.4

8.3

1.9

0.40

5.4

0.1

22

<0.01

0.08

0.003

<0.010

0.018

0.020

<0.001

<0.0001

-

~

-

-

80

91
Table 1 . continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

SO4

F

Si02

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D (%<>)

6180 (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MC-395 

04-12-94

7.4

2.0

148

158

8.2

75

76

12

6.1

10

2.3

0.40

6.0

0.1

27

0.03

0.04

0.003

O.010

0.021

0.030

0.002

<0.0001

-

--

--

-

108

109

MC-395 

07-11-94

10

18.0

86

90

8.2

40

42

8.1

2.7

5.1

1.4

0.30

3.5

<0.1

9.6

<0.01

0.02

0.003

<0.010

0.029

0.020

0.004

<0.0001

--

--

--

--

54

54

MC-395 

10-19-94

5.8

2.0

133

140

8.0

64

67

11

4.8

9.0

2.0

0.30

4.1

0.1

17

<0.02

0.03

0.003

0.010

0.035

0.020

0.004

<0.0001

-

--

--

-

88

87

MC-395 

01-17-95

-

0.0

130

135

7.8

60

63

11

4.5

8.4

2.2

0.50

4.9

<0.1

22

<0.02

0.03

0.002

0.020

0.027

0.020

0.001

<0.0001

--

--

-

--

88

90

MC-395 

04-17-95

11

0.5

148

157

8.1

71

74

12

5.5

10

0.70

0.70

5.8

0.1

27

<0.02

0.04

0.003

0.010

0.02

0.030

0.003

O.0001

--

--

-

-

104

107

MC-395 

10-16-95

19

7.5

93

96

7.9

43

45

7.4

3.3

5.0

1.4

0.20

2.9

0.1

16

<0.02

0.03

0.003

O.010

0.024

0.010

0.004

<0.0001

--

--

--

--

54

62

MC-395 

01-24-96

9.9

0.5

120

130

8.0

59

62

10

4.9

7.8

1.9

0.30

3.8

0.2

24

<0.02

0.03

0.004

<0.010

0.030

0.020

0.001

--

--

--

--

--

82

88

MC-395 

04-23-96

18

3.0

128

134

7.9

61

62

11

4.7

7.8

1.9

0.40

5.5

0.1

25

<0.02

0.03

0.009

<0.010

0.041

0.024

0.004

O.0001

--

--

--

--

80

94

MC-395 

07-16-96

49

12.5

51

55

7.9

24

25

5.5

1.4

2.9

0.70

0.10

2.4

<0.1

10

0.05

0.03

0.002

O.010

0.045

0.006

0.005

<0.0001

--

--

--

--

20

37

MC-395 

10-16-96

9.8

6.0

129

135

8.2

61

65

11

5.0

8.3

2.3

0.30

4.2

0.1

19

0.02

0.04

0.002

0.010

0.032

0.023

0.011

O.0001

-

-

--

--

86

87
Table 1. continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (iab)

pH (field)

Alkalinity (field)

Alkalinity (iab)

Ca

Mg

Na

K

Cl

SO4

F

SIO2

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (%0)

6180 (%.)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MCAF 

07-13-88

5.8

25.5

146

140

8.7

57

54

9.0

3.5

13

2.8

6.1

8.4

0.1

25

<0.01

0.05

0.046

0.25

0.055

0.050

0.015

O.0001

0.039

-

~

~

100

103

MCAF 

10-19-88

2.1

10.0

221

229

8.3

88

89

12

6.7

23

4.9

11

12

0.3

41

<0.01

0.04

0.004

0.50

0.055

0.10

0.044

O.0001

0.069

-

--

~

163

165

MCAF 

4-11-89

8.7

14.5

165

171

8.2

73

75

11

5.9

15

3.0

3.3

7.7

0.2

31

<0.01

0.06

0.020

0.14

0.043

0.060

0.070

<0.0001

0.051

~

~

-

123

121

MCAF 

07-18-89

5.3

23.5

135

138

8.6

58

54

8.3

3.6

13

3.2

5.6

7.0

0.3

26

<0.01

0.06

0.052

0.24

0.056

0.060

0.010

<0.0001

0.041

-

~

-

113

102

MCAF 

10-18-89

2.1

12.0

202

213

8.6

-

82

12

5.8

20

5.0

9.6

10

0.2

40

<0.01

0.04

0.038

0.44

0.033

0.080

0.020

<0.0001

0.064

-

-

-

118

153

MCAF 

01-09-90

5.3

2.5

192

209

8.0

87

84

13

6.5

18

4.5

6.3

9.0

0.2

40

0.02

0.04

0.021

0.29

0.035

0.060

0.026

O.0001

-

-

--

-

152

151

MCAF 

04-25-90

3.5

17.0

168

-

8.7

70

~

10

4.8

8.6

2.0

6.0

8.2

0.3

21

<0.01

0.06

0.003

0.010

0.022

0.020

0.005

0.0043

--

-

~

-

110

110

MCAF 

07-17-90

3.3

24.0

142

151

8.9

61

60

9.1

3.7

15

3.5

7.2

6.1

0.2

24

0.02

0.10

0.052

0.29

0.065

0.070

0.02

O.0001

-

-

~

--

107

106

MCAF 

10-16-90

1.3

12.5

195

228

8.5

88

88

12

6.2

23

5.5

12

14

O.1

44

O.02

0.05

0.046

0.50

0.064

0.090

0.081

0.0001

-

--

»

~

155

170

MCAF 

01-17-91

1.2

5.5

251

268

8.0

101

100

13

7.0

29

6.7

17

15

0.4

56

0.08

0.07

0.054

0.64

0.28

0.12

1.0

O.0001

-

-

~

~

197

207
Table 1. continued.

SITE1 

DATE

PARAMETERS2 :

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

SIO2

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (%o)

6180 (%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MCAF 

04-14-92

4.2

15.5

187

193

8.4

83

84

12

6.5

17

3.3

4.8

8.2

0.2

33

0.01

0.07

0.029

0.17

0.068

0.060

0.092

<0.0001

~

-

-

-

136

136

MCAF 

07-06-92

5.0

22.0

105

103

8.9

43

43

7.6

2.7

8.4

2.1

2.2

5.0

<0.1

15

0.01

0.04

0.019

0.11

0.066

0.030

0.035

<0.0001

~

~

»

-

68

69

MCAF 

10-19-92

2.2

14.5

156

160

8.4

69

68

11

4.8

14

3.5

4.6

6.7

0.2

26

0.02

0.04

0.026

0.20

0.034

0.050

0.024

<0.0001

-

-

-

-

134

112

MCAF 

01-25-93

3.4

2.5

220

235

7.7

79

78

13

6.0

25

5.3

13

18

0.2

40

0.04

0.07

0.060

0.52

0.23

0.10

0.24

<0.0001

--

~

-

-

162

170

MCAF 

04-12-93

8.7

14.0

187

193

8.3

79

81

12

6.3

15

3.6

5.2

10

0.2

32

0.02

0.05

0.024

0.18

0.11

0.060

0.12

<0.0001

--

-112

-15.2

-

118

133

MCAF 

07-13-93

66

13.0

71

74

7.6

-

35

6.8

2.0

4.4

1.2

1.2

2.3

<0.1

14

0.03

0.03

0.011

0.060

0.075

0.010

0.071

<0.0001

-

-113

-15.4

--

54

53

MCAF 

10-13-93

9.7

10.0

120

124

7.7

54

56

10

4.0

8.6

2.3

2.4

5.0

0.1

20

0.03

0.03

0.011

0.070

0.061

0.020

0.064

<0.0001

-

~

-

~

74

85

MCAF 

01-10-94

3.3

5.5

175

186

8.2

73

79

12

5.9

16

3.6

4.9

7.8

0.2

37

0.01

0.04

0.015

0.21

0.10

0.06

0.11

<0.0001

-

-

-

-

142

132

MCAF 

04-12-94

5.5

5.5

170

177

8.0

77

78

11

5.8

13

3.0

3.3

7.6

0.2

32

0.03

0.04

0.017

0.14

0.082

0.050

0.10

<0.0001

-

-

--

-

124

123

MCAF 

07-11-94

6.7

25.0

101

104

8.5

45

46

8.2

2.9

7.3

2.2

1.6

4.4

0.1

14

<0.01

0.03

0.016

0.080

0.064

0.030

0.084

<0.0001

--

~

-

-

72

68
Table 1 . continued.

oo

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

SiO2

N

P

As

B

Fe

LI

Mn

Hg

Sr

6D(%o)

618O (%»)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MCAF 

01-24-96

9.6

0.5

150

161

8.0

70

72

11

5.7

12

2.7

2.7

4.7

0.2

29

<0.02

0.03

0.017

0.11

0.071

0.050

0.11

--

--

-

--

102

110

MCAF 

04-23-96

17

13.0

141

144

8.0

65

65

11

4.9

9.6

2.4

1.4

6.0

0.1

27

<0.02

0.04

O.001

0.060

0.054

0.033

0.054

O.0001

-

--

--

--

90

103

MCAF 

07-16-96

39

18.0

86

89

7.8

38

40

7.2

2.6

6.7

1.4

1.4

2.9

0.2

18

0.03

0.03

0.013

0.080

0.080

0.025

0.047

<0.0001

-

-

--

...

50

63

MCAF 

10-16-96

7.1

11.0

154

159

8.2

68

70

10

5.1

13

3.2

3.2

5.9

0.2

30

0.02

0.04

0.020

0.16

0.061

0.045

0.082

O.0001

--

-

-

--

114

112

MCAF 

01-14-97

25

1.0

133

136

0

0

0

9.7

4.2

10

2.5

2.5

6.1

0.1

26

<0.02

0.03

0.013

0.12

0.059

0.034

0.051

<0.0001

--

--

-

--

-

--

MCAF 

04-15-97

14

8.5

157

164

8.2

74

75

12

6.0

12

2.7

2.0

6.0

0.2

31

<0.02

0.05

0.014

0.09

0.046

0.041

0.041

0.0002

-

--

--

-

-

-

MCAF 

07-15-97

31

16.0

89

92

7.9

41

41

7.5

2.6

6.1

1.6

1.3

2.8

0.2

16

<0.02

0.02

0.009

0.07

0.046

0.0

0.13

<0.0001

--

-

--

--

-

--

MCAF 

10-20-97

9.6

8.0

145

154

8

70

70

11

5.4

11

2.8

1.8

4.5

<0.1

26

<0.02

0.02

0.012

0.09

0.049

0.0

0.041

<0.0001

--

-

-

-

-

-

MCF 

07-13-88

12

17.0

84

83

8.2

38

38

8.0

2.5

5.4

1.1

0.50

4.1

0.1

9.3

<0.01

0.02

0.005

0.010

0.015

0.010

0.016

<0.0001

0.031

--

-

-

56

54

MCF 

10-19-88

3.1

5.0

140

145

7.6

78

70

11

5.6

9.4

2.3

0.50

5.6

0.1

17

<0.01

0.04

0.004

<0.010

0.018

0.030

0.003

<0.0001

0.047

--

--

--

94

98
Table 1. continued.

SITE1 

DATE

PARAMETERS2:

Discharge (cfs)

T(°C)

SC (field)

SC (lab)

pH (field)

Alkalinity (field)

Alkalinity (lab)

Ca

Mg

Na

K

Cl

S04

F

SiO2

N

P

As

B

Fe

Li

Mn

Hg

Sr

6D (%»)

6180(%o)

Tritium (T.U.)

TDS (lab)

TDS (sum)

MCF 

01-09-90

4.5

0.0

147

170

8.0

83

80

14

6.2

11

2.8

0.50

6.0

0.1

30

0.02

0.04

0.001

<0.010

0.021

--

0.003

-

--

--

-

--

120

121

MCF 

04-25-90

8.8

5.5

131

132

8.3

53

63

9.9

4.9

16

3.4

0.50

5.4

0.1

31

<0.01

0.04

0.030

<0.010

0.059

0.060

0.052

<0.0001

--

--

-

--

87

104

1 MBP-3 denotes a geothermal production well at Casa Diablo; BAL denotes the

Lake; FHAB, FHCD, and FH2,3 denote springs at the Hot Creek Fish Hatcher

from bridge in Hot Creek gorge; LHC-SP denotes hot spring near the head of L

water sampling site along Mammoth Creek upstream of State Highway 395; M

along Mammoth Creek upstream of input from Hot Creek Fish Hatchery; HCF 

flume below Hot Creek gorge.

2 T denotes temperature; SC denotes specific conductance in uS/cm; Alkalinity e

isotope values 6D and 618O expressed as parts per mil relative to SMOW; Trit

(T.U.); TDS denotes total dissolved solids in mg/L, determined both by dry we

concentrations of individual chemical constituents (sum).