PUEBLO RESERVOIR

1993 SEDIMENTATION SURVEY

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U.S. Department of the Interior

Bureau of Reclamation
7-2090 (4-81)

n( ,mtnn TECHNICAL REPORT STANDARD TITLE PAGE

- 1. REPORT NO. :T:IE4ET Ii 3. RECIPIENTS CATALOG NO.

4. TITLE AND SUBTITLE . 5. REPORT DATE

May 1994

Pueblo Reservoir 6. PERFORMING ORGANIZATION CODE

1993 Sedimentation Survey

D-5753

7. AUTHOR(S) 8. PERFORMING ORGANIZATION

Ronald L. Ferrari REPORT NO.

9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. WORK UNIT NO.

Bureau of Reclamation 11. CONTRACT OR GRANT NO.

Denver Office

Denver CO 80225 13. TYPE OF REPORT AND PERIOD COVERED

12. SPONSORING AGENCY NAME AND ADDRESS

DIBR

Same

14. SPONSORING AGENCY CODE

D-5753

15. SUPPLEMENTARY NOTES

Microfiche and hard copy available at the Denver Office, Denver, Colorado

16. ABSTRACT

The Bureau of Reclamation surveyed Pueblo Reservoir in April 1993 to compile field data for

computing a present storage-elevation relationship. The report describes the survey

procedures and equipment used during the 1993 collection and provides data for future

surveys. The report also provides results of the investigation to monitor changes caused by

sediment accumulation in the reservoir since dam closure on January 9, 1974.

As of May 1993, at reservoir spillway crest elevation (feet) 4898.7, the surface area was 5,671

acres, and the total capacity was 349,940 acre-feet. Since the reservoir's initial filling in

January 1974, 8,181 acre-feet of sediment have been trapped in Pueblo Reservoir, resulting in

a 2.28-percent loss in reservoir capacity. The average annual rate of sediment accumulation

since 1974 is 423.9 acre-feet.

17. KEY WORDS AND DOCUMENT ANALYSIS

a. DESCRIPTORS- reservoir area and capacity! sedimentation! reservoir surveys! sonar!

sediment distribution! contour area! reservoir area! sedimentation survey!

b. IDENTIFIERS- Pueblo Reservoir! Eastern Colorado Projects Office! Pueblo Reservoir

Operations Office!

C. COSATI Field/Group 13/B COWRR: 1302.66 SRIM:

18. DISTRIBUTION STATEMENT 19. SECURITY CLASS 21. NO. OF PAGES

(THIS 52 UNCLASSIFIED

20. SECURITY CLASS 22. PRICE

(THIS PAGE)

UNCLASSIFIED
PUEBLO RESERVOIR

1993 SEDIMENTATION SURVEY

by

Ronald L. Ferrari

Sedimentation Section

Surface Water Branch

Division of Earth Sciences

Denver Office

Denver, Colorado

May 1994
ACKNOWLEDGMENTS

The Bureau of Reclamation's Sedimentation Section prepared

and published this report. The hydrographic survey was

supervised by Ronald Ferrari, Hydraulic Engineer. The

hydrographic survey was assisted by personnel from the Eastern

Colorado Projects Office and the Pueblo Reservoir Operations

Office, who also conducted the field work of locating and flagging

the existing sediment range end markers and surveying all the

above water ranges. Ronald Ferrari completed the data

processing, sediment computations, area-capacity tables, and the

report. Joseph Lyons, Hydraulic Engineer, was consulted in the

sediment computations and report preparation.

U.S. Department of the Interior

Mission Statement

As the Nation's principal conservation agency, the Department of the

Interior has responsibility for most of our nationally-owned public

lands and natural resources. This includes fostering sound use of our

land and water resources; protecting our fish, wildlife, and biological

diversity; preserving the environmental and cultural values of our

national parks and historical places; and providing for the enjoyment

of life through outdoor recreation. The Department assesses our

energy and mineral resources and works to ensure that their

development is in the best interests of all our people by encouraging

stewardship and citizen participation in their care. The Department

also has a major responsibility for American Indian reservation

communities and for people who live in island territories under U.S.

administration.

The information contained in this report regarding commercial

products or firms may not be used for advertising or promotional

purposes and is not to be construed as an endorsement of any

product or firm by the Bureau of Reclamation.

The information contained in this report was developed for the

Bureau of Reclamation; no warranty as to the accuracy,

usefulness, or completeness is expressed or implied.

11
CONTENTS

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Page

Introduction 1

Summary and conclusions 2

Description of basin 2

Reservoir operations 3

Surveys 3

Original survey 3

1993 resurvey 4

Reservoir area and capacity 4

Development of 1993 contour areas 4

1993 revised storage capacity 4

Sediment analyses 5

Reservoir sediment distribution 6

Longitudinal distribution 6

Lateral distribution 6

References 7

TABLES

Table

1 Reservoir sediment data summary (page 1 of 2) 8

1 Reservoir sediment data summary (page 2 of 2) 9

2 Summary of 1993 survey results 10

3 Range end coordinates (page 1 of 3) 11

3 Range end coordinates (page 2 of 3) 12

3 Range end coordinates (page 3 of 3) 13

FIGURES

Figure

1 Pueblo Reservoir location map 14

2 Pueblo Dam plan and sections 15

3 Pueblo Dam outlet sections 16

4 Pueblo Reservoir range location map 17

5 Width adjustment method for revising contour areas 19

6 Area and capacity curves - Pueblo Reservoir 20

7 Longitudinal profile - Arkansas River 21

8 Sediment Range 1 - Arkansas River 22

9 Sediment Range 2 - Arkansas River 23

10 Sediment Range 3 - Arkansas River 24

11 Sediment Range 4 - Arkansas River 25

12 Sediment Range 5 - Arkansas River 26

13 Sediment Range 6 - Arkansas River 27

14 Sediment Range 6A - Arkansas River 28

15 Sediment Range 7 - Arkansas River 29

16 Sediment Range 8 - Arkansas River 30

17 Sediment Range 9 - Arkansas River 31

18 Sediment Range 9A - Arkansas River 32

19 Sediment Range 10 - Arkansas River 33

20 Sediment Range 1OA - Arkansas River 34

21 Sediment Range 11 - Arkansas River 35

22 Sediment Range 12 - Arkansas River 36

in
CONTENTS -CONTINUED

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FIGURES -CONTINUED

Figure Page

23 Sediment Range 13 - Arkansas River 37

24 Sediment Range 14 - Arkansas River 38

25 Sediment Range 15 - Arkansas River 39

26 Sediment Range 16 - Arkansas River 40

27 Sediment Range 20 - Boggs Creek 41

28 Sediment Range 21 - Boggs Creek 42

29 Sediment Range 30 - Above Manna 43

30 Sediment Range 40 - Rock Creek 44

31 Sediment Range 41 - Rock Creek 45

32 Sediment Range 42 - Rock Creek 46

33 Sediment Range 43 - Rock Creek 47

34 Sediment Range 50 - Peck Creek 48

35 Sediment Range 51 - Peck Creek 49

36 Sediment Range 60 - Turkey Creek 50

37 Sediment Range 61 - Turkey Creek 51

38 Sediment Range 62 - Turkey Creek 52

4

iv
INTRODUCTION

Pueblo Dam and Reservoir, located on the Arkansas River in Pueblo County, are 6 miles west

of the city of Pueblo in south-central Colorado. Pueblo Reservoir, formed by Pueblo Dam, is

one of the major storage features of the Fryingpan-Arkansas Project. The FryingpanArkansas Project is a multipurpose, transmountain development which diverts water from

the Fryingpan River and tributaries on the western slope of the Rocky Mountains to the

Arkansas River on the eastern slope. Additional reservoirs that form the project include

Ruedi Reservoir on the western slope and Turquoise Lake, Mt. Elbert Forebay Reservoir, and

Twin Lakes Reservoir on the eastern slope. Pueblo Reservoir is the largest and the terminal

storage feature of the Fryingpan-Arkansas project (fig. 1).

Construction of the Fryingpan-Arkansas Project was authorized by Public Law 87-590 (76

Stat. 389) and signed by the President on August 16, 1962. Construction of Pueblo Dam

began in 1970 and was completed in August 1975. The left embankment was modified in

1980 by the addition of a downstream stability berm to provide protection against potentially

weak foundation soils. Initial water storage began on January 9, 1974. Maximum elevation

was attained in water year 1986 at reservoir elevation 4887.1 feet.

Pueblo Dam is a composite concrete and earthfill structure, about 10,200 feet long at crest

elevation 4925.0. The concrete section has a structural height of 250 feet and a hydraulic

height of 191 feet. The earthifil portions consist of the left and right abutment

embankments, totaling 8,450 feet in length. The concrete dam consists of 23 massive-head

buttresses which total 1,750 feet in length, and has a 550-foot overflow spillway section and

a 1,200-foot nonoverfiow section (fig. 2).

The uncontrolled overflow spillway has a crest elevation of 4898.7 feet and is located in the

overflow section of the buttresses. The spillway consists of a concrete ogee crest, training

walls, ifip bucket, stilling basin, and an outlet channel. The spillway design flow is 191,500

ft3/s (cubic feet per second) at reservoir elevation 4919.0.

Five separate outlets operate at Pueblo Dam. The Bessemer Ditch, located in the right

embankment, is controlled by four high-pressure gates with a maximum discharge of 393

ft3/s. The river outlet, located in the buttress over the streambed, is controlled by two gates

with a maximum discharge of 1,120 ft3/s. The spillway outlets, located under the spillway,

consist of three gated conduits with a maximum discharge of 8,190 ft3/s. The fish hatchery

outlet, located in the buttress, is controlled by multilevel gated intakes for controlling water

quality to the downstream fish hatchery. The maximum discharge rate is 30 ft3/s. The south

outlet, located in a buttress, has gated intakes and supplies a maximum discharge of 345 ft3/s

of municipal and industrial water (fig. 3).

Pueblo Reservoir has an approximate length of 11.4 miles and an average width of 0.8 miles

at reservoir pooi elevation 4900.0. The average width is determined by dividing the surface

area by the reservoir length at elevation 4900.0. The total Arkansas River drainage area

above the dam is 4,669 square miles, of which an estimated 4,170 square miles contributes

* The definition of terms such as "structural height," "hydraulic height,' etc., may be found in manuals such as

Reclamation's Design of Small Dams and Guide for Preparation of Standing Operating Procedures for Dams and

Reservoirs, or ASCE's Nomenclature for Hydraulics.
sediment inflow. The estimated sediment contributing area is the total drainage area minus

the contributing drainage areas above the dams located in the drainage area above Pueblo

Reservoir.

At the beginning of reservoir storage in January 1974, Pueblo Reservoir had a calculated

surface area of 5,671 acres and a capacity of 357,821 acre-feet at spillway crest elevation

4898.7.

SUMMARY AND CONCLUSIONS

This report presents the results of an investigation to monitor changes caused by sediment

accumulations in Pueblo Reservoir after 19.3 years of reservoir operations. The report also

describes the surveying procedures and equipment used in the 1993 investigation and

provides data for future survey use. The primary purpose of the 1993 survey was the

collection of data to compute the area-capacity relationships for operation of Pueblo Reservoir.

Table 1 contains a summary of reservoir sediment data for the 1993 survey. The 1993 survey

determined'that the reservoir has a storage capacity of 349,940 acre-feet and a surface area

of 5,671 acres at spillway crest elevation 4,898.7. Since closure in January 1974, the

reservoir has accumulated a volume of 8,181 acre-feet of sediment below elevation 4,898.7.

This volume represents a 2.28-percent loss in total capacity and an average annual loss of

423.9 acre-feet for the operating period of January 1974 through May 1993,

DESCRIPTION OF BASIN

The Arkansas River originates in central Colorado and flows in a southerly direction to above

Salida, Colorado, and then eastward to Pueblo Reservoir. The mean annual runoff of the

drainage basin above Pueblo Reservoir prior to its construction was 511,800 acre-feet. The

runoff was calculated using the 80-year average flow at the USGS (U.S. Geological Survey)

gauge Arkansas River near Pueblo, Colorado, which was located about 5 miles downstream

from the dam location. The total drainage area above Pueblo Dam is 4,669 square miles, and

the net sediment contributing area is estimated to be 4,170 square miles. The net

contributing area includes removal of areas above the upstream developed reservoirs that are

assumed to trap all sediment inflow. The upper Arkansas River is a steep mountain stream,

and the basin has about 25 mountain peaks above 14,000 feet. The river emerges from the

mountainous area through the Royal Gorge, where the valley gradually gets wider through

the foothills to the plains around Pueblo.

The vegetative cover in the basin above Pueblo is widely diversified because of the wide range

of annual precipitation. The highest mountain peaks are above timberline and are devoid

of cover. In the timber areas, conifers, aspens, brush, and grasses are found. In the

woodland zone, pinon, juniper, scrub oak, sagebrush, and scattered growths of bunch grass

predominate. In the plains region, vegetation consists mainly of grasses, shrubs, and

occasional cactuses. The only trees in the plains region are cottonwood, wifiow, tamarisk, and

associated deciduous trees that fringe the water courses and irrigation ditches.

Wide variations of climate occur in the Arkansas Basin. In the mountainous regions, the

precipitation varies widely over relatively short distances. Much of the total precipitation

occurs in the form of snow. In the plains, most of the precipitation is from rainfall, which at

times occurs in the form of violent cloudbursts, producing small volumes but causing short2
duration flash floods of damaging intensities. The recorded annual normal precipitations

within the watershed vary from 9 to 19 inches. Because of the variation in altitude, the

mean annual temperatures range from 37 to 54 °F, and the extremes range from -54 to 105

°F.

RESERVOIR OPERATIONS

The reservoir is a multiuse facility having (following values are from May 1993 area-capacity

tables):

• 131,504 acre-feet of surcharge storage between elevations 4898.70 and 4919.00

• 27,044 acre-feet of flood control storage between elevations 4893.79 and 4898.70

• 65,716 acre-feet of joint use storage between elevations 4880.54 and 4893.79

• 229,059 acre-feet of conservation storage between elevations 4796.70 and 4880.54

• 25,792 acre-feet of inactive storage between elevations 4764.00 and 4796.7

• 2,329 acre-feet of dead storage between elevations 4752.80 and 4764.00

Records for Pueblo Reservoir show a calculated average unregulated inflow of 595,355 acrefeet per year. The estimated mean annual runoff from the basin is 2.06 inches. Since normal

operations have begun, Pueblo Reservoir operation has ranged from a minimum end-of-month

elevation of 4873.4 in water year 1987 to a maximum elevation of 4887.1 in water year 1986.

The inflow and end-of-month stage records in table 1 show the extreme annual fluctuation

of the reservoir,

SURVEYS

Original Survey

The original sediment ranges were surveyed by the Bureau of Reclamation prior to

inundation of water behind Pueblo Reservoir dam and are referred to as the original, or 1974,

data. For future reference, Table 3 lists the local and state plane coordinates for the range

line end points. Several of the ranges had portions of them resurveyed prior to inundation

to account for construction borrow pit areas. The finalized original range line data used the

resurvey data. Figure 4 illustrates the range line network for Pueblo Reservoir.

The original surface areas for Pueblo Reservoir were determined by planimetering

topographic maps of the reservoir area developed prior to inundation-Map Numbers 382-

706-2270 to 382-706-2290. The topographic maps have a scale of 1 inch equals 400 feet and

a 5-foot contour interval. This study used these maps for digitizing the affected segmented

areas as described in the reservoir area and capacity section.
1993 Resurvey

Fieldwork for the 1993 survey began in the spring of 1993. The hydrographic survey was

completed in late April near reservoir elevation 4859.0. The preliminary field work,

performed by personnel from the Eastern Colorado Projects Office and the Pueblo Reservoir

Operations Office, consisted of locating and flagging the existing sediment range end

markers, relocating the destroyed ones, and surveying the range lines not accessible by boat.

The hydrographic survey was performed using Reclamation's small boat bathymetric survey

system. The small boat system consisted of a sonic depth recorder and a reflector prism

mounted on the boat. The distances from a known point, usually one of the range end

markers, to the small boat were determined as the boat proceeded along the range line by

an EDM (electronic distance measuring) instrument set up on shore and aimed at the

mounted reflector target. Range distances were communicated by radio from the shore to the

boat at preselected intervals and marked on the sonar charts as the boat proceeded across

the reservoir. The boat was held on course as closely as possible by radio communication

from the EDM operator to the survey boat. This system was used to collect the underwater

data for range lines 1 through bA, 20, 21, 30, 40, 41, 42, 50, and 60. The data for range

lines 11 through 16, 43, 51, 61, and 62 were collected by conventional land survey methods.

Data were not collected for range lines 17, 18, and 70 because their location was not affected

by previous reservoir operations.

RESERVOIR AREA AND CAPACITY

Development of 1993 Contour Areas

For the purposes of the sedimentation analysis and to better represent storage changes, the

reservoir was subdivided into segments, using the range lines to delineate the limit of each

segmental boundary. The 1993 reservoir surface areas were computed by the width

adjustment method described by Blanton (1982) and illustrated on figure 5. The method

entails computing the new segmented contour area, A1, between ranges by applying an

adjustment factor to the original segmental contour area, A0. The computed adjustment

factor for each segment was the ratio of the new average width to the original average width

for the ranges, outlining the segment at the specified contour elevation. The input data

included the original and 1993 range line data along with the segmented areas for the

affected contour elevations. A comparison of simultaneous plots of original and 1993 range

profiles indicated the lateral distribution of sediment at the different measured contour

elevations. Where these plots indicate changes have occurred on the side slopes of the

reservoir, a decision was made to determine whether the change was caused by actual

deposition, erosion, or survey inaccuracies. No area adjustment was made if the measured

change was judged to be caused by survey inaccuracy. The 1993 total reservoir surface area

at a given contour is the original total area minus the summation of all segmental areas

silted in at that elevation. The 1993 total area computation results are listed in column (2)

of table 2.

1993 Revised Storage Capacity

The storage-elevation relationships based on the 1993 underwater survey data were

developed using Reclamation's area-capacity computer program ACAP85 (Reclamation, 1985).

The 1993 surface areas resulting from the width adjustment computations at 5-foot contour

intervals were used as the control parameters for computing reservoir capacity. The program

4
computes an area at 0.01- to 1.0-foot area increments by linear interpolation between the

given contour intervals. The program begins by testing the initial capacity equation over

successive intervals to ensure that the equation fits within an allowable error limit, which

was set at 0.00000 1 for Pueblo Reservoir. This capacity equation is then used over the full

range of intervals fitting within this allowable error limit. For the first interval at which the

initial allowable error limit is exceeded, a new capacity equation (integrated from the basic

area curve over that interval) begins testing the fit until it also exceeds the error limit. Thus,

the capacity curve is defined by a series of curves, each fitting a certain region of data. Final

area equations are derived by differentiating the capacity equations, which are of second

order polynomial form:

y a + a2x + a3x2

where: y = capacity,

x = elevation above a reference base,

a = intercept, and

a2 and a3 = coefficients

Results of the 1993 Pueblo Reservoir area and capacity computations are listed in tables 1

and 2 and plotted on figure 6. A separate set of 1993 area and capacity tables will be

published for the 0.01-, 0.1-, and 1-foot elevation increments (Reclamation, 1993). The 1993

area and capacity computations results are listed in columns (4) and (5) of table 2. Column

(2) in the table gives the original measured contour areas used in the original area and

capacity computation, and column (3) gives the original capacity computed by ACAP. Both

the original and 1993 area and capacity curves are plotted on figure 6 for a visual comparison

of changes. The 1993 survey determined that the reservoir has a storage capacity of 349,940

acre-feet and a surface area of 5,671 acres at spillway crest elevation 4898.7.

SEDIMENT ANALYSES

Sediments have accumulated in Pueblo Reservoir to a total volume of 8,181 acre-feet below

elevation 4898.7, spiiway crest, since storage began in January 1974. This volume

represents a 2.28-percent loss in total capacity and an average annual accumulation rate of

423.9 acre-feet for the 19.3-year period of operation. The net sediment accumulation rate

from the contributing basin was 0.102 acre-feet per square mile per year for the same period.

The measured annual inflow rate is about 41 percent of the original annual. estimate of 1,031

acre-feet.

Before projecting future sediment accumulation, the original estimate needs to be reanalyzed

using the John Martin and Pueblo Reservoir sedimentation survey information. John Martin

Reservoir is located downstream from Pueblo Reservoir and had a net contributing drainage

area of 18,102 square miles prior to Pueblo Reservoir closure in 1974. Ten sediment surveys

were conducted on John Martin Reservoir from April 1942 through March 1972. The

calculated average annual sediment accumulation between the surveys varied from -0.0398

to 0.443 acre-feet per square mile. For the 29.9-year period, the annual sediment

accumulation rate was 0.148 acre-feet per square mile for the contributing drainage area.

A sedimentation survey conducted in June 1980 calculated an annual sediment accumulation

rate, from March 1972, of 0.077 acre-feet per square mile for the reduced net contributing

drainage area. The John Martin Reservoir values illustrate the extreme variation of the

calculated annual sediment accumulation values between surveys.

5
It is recommended that an annual rate of 0.130 acre-feet per square mile of contributing

drainage area be used for projecting sediment accumulation in Pueblo Reservoir. This value

was determined using the 29.9-year annual rate for John Martin Reservoir and the 19.3-year

annual rate for Pueblo Reservoir. This value will be better defined in the future after each

survey of Pueblo Reservoir.

The results of the sediment data and volume computations for the 1993 survey are shown in

tables 1 and 2. The data include a tabulation of incremental sediment inflow volume and

sediment accumulation computed for the period between initial conditions and the 1993

resurvey. Table 1 includes information on the drainage basin, records of estimated inflow,

reservoir operations, and reservoir storage.

RESERVOIR SEDIMENT DISTRIBUTION

Longitudinal Distribution

The distribution of sediment throughout the length of the reservoir is illustrated by plots of

the thaiweg proffle representing the original and 1993 resurveyed profiles for the Arkansas

River as shown on figure 7. Thaiweg elevations representing original and resurveyed

reservoir conditions were taken from the original and 1993 survey notes. Except for the

possibility of some missed low points, the plotted profile should closely resemble actual

channel bottom conditions during the original range survey completed prior to inundation of

the reservoir. Except for some minor inaccuracies in sounding and being slightly off line, the

bottom of the 1974 and 1993 profiles should closely represent channel bottom conditions at

the time of those resurveys. The channel distance used for range line location is the original

river channel distance from the dam to each range line in an upstream direction on the

Arkansas River.

Lateral Distribution

Ground profiles for the 31 original sediment ranges are shown on figures 8 through 38. The

survey data were obtained from copies of the original survey data books. Several of the lines

had portions resurveyed prior to reservoir inundation to account for borrow pit areas. The

original data used for the sedimentation analysis accounted for the borrow pit areas. The

1993 range profile data are superimposed on these plots to indicate the changes which have

occurred and to represent in general the lateral distribution of sediment within the reservoir.

A 1993 survey was not accomplished for range lines 17, 18, and 70 because they were located

upstream from elevation 4900.0, and no reservoir deposition was judged to have occurred

above that elevation. For sediment computation purposes, a complete section was needed for

all ranges; for this reason, the original data were inserted into the 1993 data file to complete

the areas not surveyed in 1993.

6
REFERENCES

American Society of Civil Engineers, Nomenclature for Hydraulics, ASCE Headquarters, New

York, 1962.

Blanton, J.O. III, "Procedures for Monitoring Reservoir Sedimentation: Technical Guideline

for Bureau of Reclamation," Denver Office, Denver, CO, October 1982.

Bureau of Reclamation, Surface Water Branch, ACAP85 User's Manual, Denver Office,

Denver, Colorado, 1985.

Bureau of Reclamation, Guide for Preparation of Standing Operating Procedures for Bureau

of Reclamation Dams and Reservoirs, U.S. Government Printing Office, Denver, CO, 1987a.

Bureau of Reclamation, Design of Small Dams, U.S. Government Printing Office, Denver, CO,

1987b.

Bureau of Reclamation, Denver Office, "Pueblo Reservoir Area and Capacity Tables,

Fryingpan - Arkansas Project," Great Plains Region, Denver, CO, May 1993.

7
RESERVOIR SEDIMENT

DATA SY Pueblo Reservoir

NAME OF RESERVOIR 1

DATA SHEET HO.

O 1. OWNER Bureau of Reclamation 2. STREAM Arkansas River 3. STATE Colorado

A 4. SEC. 36 TWP. 20S RANGE 66W 5. NEAREST P.O. Pueblo 6. COUNTY Pueblo

M 7. LAT 38° 16' 15 LONG 104° 43' 30 8. TOP OP DAM ELEVATION 4925 'F. SPILLWAY CREST EL. 4898.7

1 10. STORAGE 11. ELEVATION 2. ORIGINAL 13. ORIGINAL 4. CROSS STORAGE IS. DATE

E ALLOCATION TOP OF POOL SURFACE AREA, Ac CAPACITY, AF ACRE- FEET STORAGE

BEGAN

a. SURCHARGE 4,919.00 7,377' 131,504 489,325'

H b . FLOOD CONTROL 4,898.70 5,671 27,046 357,821

1/9/74 V

o

c. POWER

I 2. JOINT USE 4,893.79 5,352 65,980 110,775 16. DATE

R

e. CONSERVATION 4,880.54 4,642 234,176 264,795

IoN

f. INACTIVE 4,796.70 1,282 26,661 10,419 BEGAN

g. DEAD 4,764.00 421 3,758 1,732 8/75

17. LENGTH OF RESER vOIR 1 1.4 MILES AVG. WIDTH OF RESERVOIR 0.8 MILES

W 18. TOTAL DRAINAGE AREA 4,669 SQUARE MILED 22. MEAN ANNUAL P RECIPITATION 9 to 19 INCHES

19 NET SEDIMENT CONTRIBUTING AREA 4,l7O. SQUARE MILES 23. MEAN ANNUAL RUNOFF 2.06 INCHES

I 20. LENGTH MILES AV. WIDTH MILES 24. MEAN ANNUAL RUNOFF 595,355 ACRE-FEET

N

21. MAX. ELEVATION WIN. ELEVATION 25. ANNUAL TEMP. MEANI7-54°F RANGE 105°F to(-)54°F

26. DATE OP 27. 28. 29. TYPE OF 30. NO. OF" 31. SURFACE 32. CAPACITY 33. C/I

U SURVEY PER. ACCL. SURVEY RANGES OR AREA, AC. ACRE-FEET RATIO AF/AF

R YRS. YRS. INTERVAL

1/74 Contour (D) 5-ft 5,671° 358,121° 0.60

5/93 19.3 19.3 Range (0) 31 5,671 349.940 0.59

0

A

T 26. DATE OF 34. PERIOD 35. PERIOD WATER INFLOW, ACRE FEET WATER INFLOW TO DATE, AF

A SURVEY ANNUAL

PRECIP.

a. MEAN ANN. b. MAX. ANN. c. TOTAL a. MEAN ANN. b. TOTAL

5/93 9 to 19 595,3553 1,007,400 11,907,100 595,3553 11,907,l00

26. DATE OF 37. PERIOD CAPACITY LOSS, ACRE-FEET 38. TOTAL SEDIMENT DEPOSITS TO DATE, AP

SURVEY

a. TOTAL b. AV. ANN. c. /MI.2-YR. a. TOTAL b. AV. ANNUAL c. /MI.2-YR.

5/93 8,181 423.9 0.102 8,181 423.9 0.102

26. DATE OF 39. AV. DRY 40. SED. DEP. TONS/MI.2-YR. 41. STORAGE LOSS, PCT. 42. SEDIMENT

SURVEY wr. )#/FT') INFLOW, PPM

a. PERIOD b. TOTAL TO a. AV. b. TOTAL TO a. b.

DATE ANNUAL DATE PER. TOT.

5/93 0.12 2.28

26.

DATE

43. DEPTH DESIGNATION RANGE IN FEET BELOW SPILLWAY CREST ELEVATION 4898.7

OF

SURVEY

173.7-

153.7

153.7-

133.7

133.7-

113.7

113.

93.7

7- 93.7-

73.7

73.7-

53.7

53.7-

33.7

33.7-

13.7

13.7-

crest

5/93 PERCENT OF TOTAL SEDIMENT LOCATED WITHIN DEPTH DESIGNATION

0.8 16.7 2.4 22. 0 14.0 12.8 12.6 17.0 1.7

26. 44. REACH DESIGNA TION PERCENT OF TOTAL OR IGINAL LENGTH OP RESERVOIR

DATE

OUR VEY

0-10 10-

20

20-

30

30-

40

40-

50

50-

60

60-

70

70-

80

80-

90

90-

100

100-

105

105-

110

130-

115

115-

120

120-

125

PERCENT OP TOTAL SEDIMENT LOCATED WITHIN REACH DESIGNATION

N/A

Table 1. - Reservoir sediment data summary (page 1 of 2).
45. RANGE IN RESERVOIR OPERATION

YEAR MAX. ELEV. MIN. ELEV. INFLOW, AK YEAR MAX. ELEV. FIN. ELEV. INFLOW, AF

1974 4792.6 4775.6 448,200 1976 4798.8 4790.1 667,900

1976 4821.8 4830.1 414,900 1977 4830.2 4799.6 234,000

1978 4800.8 4797.11 401,500 1979 4820.1 4797.2 581,400

1980 4832.0 4799.8 779,300 1981 4831.4 4797.4 327,400

1982 4837.3 4799.0 618,600 1983 4879.6 4820.0 944,100

1984 4884.3 4868.0 1,007,400 1985 4886.4 4875.3 978,000

1986 4887.1 4876.4 767,400 1987 4881.8 4873.4 792,400

1988 4880.8 4853.2 454,200 1989 4866.1 4838.6 467,600

1990 4851.5 4828.6 427,200 1991 4854.5 4800.0 506,400

1992 4856.4 4823.6 522,300 1993 4863.7 4834.5 666,900

46. ELRVATIOn - AREA - cPA.ITY DATA FOR 1 99 CAPA'V ___________

ELEV. AREA CAP. ELEV. AREA CAP. ELEV. AREA CAP.

4752.8 0 0 4755 16 18 4760 318 853

4765 445.7 2,762 4770 471.8 5,056 4775 691.4 7,964

4780 794 11,677 4785 904.3 15,923 4790 1,007 20,701

4795 1,159 26,116 4800 1,280 32,214 4805 1,431 38,991

4810 1,643 46,676 4815 1,813 55,316 4820 2,005 64.861

4825 2,167 75,291 4830 2,368 86,629 4835 2,579 98,996

4840 2,737 112,286 4845 2,910 126,404 4850 3,089 141,401

4855 3,298 157,369 4860 3,530 174,439 4865 3,763 192.671

4870 3,992 212,059 4875 4,238 232,634 4880 4,587 254,696

4885 4,823 278,221 4890 5,115 303,066 4895 5,424 329,414

4898.7 5,671 349,940 4900 5,758 357,369 4905 6,154 387,149

4910 6,532 418,864 4915 6,998 452,689 4920 7,475 488,871

4925 8,027 527,626

_____________ ____________ _____________ _____________

47. REMARKS AND REFERENCES

In May 1984, Reclamation recomputed the area and capacity of Pueblo Reservoir using the cubic spline option of

the Bureau of Reclamation program ACAP. The original surface areas were used as input d ata.

2 Estimated noncontributing area into reservoir. Sediment inflow is affected by several upstream reservoirs such

as Turquoise Lake, Twin Lakes, Clear Creek Reservoir, De Weese Reservoir, and several ot her small res ervoirs

and diversion structures.

Calculated inflow to Pueblo Reservoir for water years 1974 through 1993. Runoff contributed by 4,669- square-mile

drainage area plus diverted water from the western slope.

Surface area and capacity at spillway crest elevation 4898.7. For sedime nt computation purposes, the original

capacity was recomputed using the segmented least squares fit option of the Bureau of Reclamation program ACAP.

This option is the current method used by Reclamation. The original surf ace areas were used as input data.

1993 surface area and capacity at spillway crest elevation 4898.7. The 1993 area and capacity tables were

computed using the segmented least squares fit option of the Bureau of Re clamation program ACAP. Thi s option

is the current method used by Reclamation.

6 Maximum and minimum end-of-month reservoir elevations for indicated water years. Calcul ated inflows to Pueblo

Reservoir for indicated water years.

48. AGENCY MAKING SURVEY Bureau of Reclamation

49. AGENCY SUPPLYING DATA Bureau of Reclamation DATE March 1994

Table 1. - Reservoir sediment data summary (page 2 of 2).
I.

C

)l)

Elevation

(feet)

(2)

Original

Area

(acres)

(3)

Original

Total

Capacity

(acre-feet)

(4)

1993

Area

(acres)

(5)

1993

Capacity

(acre-feet)

(6)

Measured

Sediment

Volume

(acre-feet)

(7)

Percent

Measured

Sediment

(8)

Percent

Reservoir

Depth

4925 8,027 535,807 8,027 527,626 8,181 100.0 -

4915 6,998 460,870 6,998 452,689 8,181 100.0 -

4905 6,154 395,330 6,154 387,149 8,181 100.0 -

4898.7 5,671 358,121 5,671 349,940 8,181 100.0 100.0

4895 5,424 337,595 5,424 329,414 8,181 100.0 97.9

4885 4,853 286,267 4,823 278,221 8,046 98.3 92.1

4875 4,358 240,160 4,238 232,634 7,526 92.0 86.4

4865 3,836 199,325 3,763 192,671 6,654 81.3 80.6

4855 3,361 163,392 3,298 157,369 6,023 73.6 74.8

4845 2,925 132,022 2,910 126,404 5,618 68.7 69.1

4835 2,636 104,260 2,579 98,996 5,264 64.3 63.6

4825 2,239 79,862 2,167 75,291 4,571 55.9 57.6

4815 1,882 59,400 1,813 55,316 4,084 49.9 51.8

4805 1,532 42,420 1,431 38,991 3,429 41.9 46.0

4795 1,288 28,435 1,159 26,116 2,319 28.3 40.3

4785 934 17,555 904.3 15,923 1,632 19.9 34.5

4775 695 9,417 691.4 7,964 1,453 17.8 28.8

4765 447 4,192 445.7 2,762 1,430 17.5 23.0

4755 199 987 16 18 969 11.8 17.3

4752.8 146 608 0 0 608 7.4 16.0

4745 15 62 0 0 62 0.8 11.5

4735 2 10 0 0 10 0.1 5.8

4725 0 0 0 0 0 0 0

(1) Elevation of reservoir water surface.

(2) Original reservoir surface area values.

(3) Original reservoir capacity recomputed using ACAP85 from original measured surface areas.

(4) Reservoir surface area from 1993 survey.

(5) 1993 calculated reservoir capacity from 1993 survey data using ACAP85.

(6) Measured sediment volume = column (3) - column (5).

(7) Measured sediment expressed in percentage of total sediment, 8,181 acre-feet at spillway crest elevation 4898.7.

(8) Depth of reservoir expressed in percentage of total depth of 173.7 feet, from spillway crest and river channel at elevation 4725.0.

Table 2. - Summary of 1993 survey results.
Range State Plane

North

Coordinated

East

Range

Station

Elevation

R-1L 587,507 2,219,856 10+00 4929.45

R-1R 579,101 2,220,427 94+28 4919.69

R-2L 587,267 2,212,999 10+00 4938.91

R-2R 581,211 2,214,826 73+26 4961.83

R-3L 586,875 2,209,859 10+00 4928.76

R-3R 580,458 2,210,691 74+73 4938.32

R-4L 585,609 2,207,795 10+00 4926.26

R-4R 580,959 2,207,861 56+52 4923.68

R-5L 585,609 2,207,795 10+00 4926.26

- R-5R 581,822 2,204,335 61+30 4938.19

R-6L 587,009 2,204,440 10+00 4937.85

R-6R 584,375 2,201,957 46+21 4926.27

R-AL 588,231 2,203,507 10+00 4937.20

R-6AR 586,617 2,199,501 53+21 4964.26

R-7L 590,607 2,201,603 10+00 4950.27

R-7R 587,644 2,197,358 61+78 4994.39

R-8L 593,797 2,197,652 10+00 4980.54

R-8R 590,275 2,197,834 45+27 4934.29

R-9L 593,143 2,193,634 10+00 4917.62

R-9R 590,987 2,193,587 31+57 4971.81

R-9AL 593,918 2,192,468 10+00 4925.00

R-9AR 592,354 2,191,076 30+95 4919.42

R-1OL 595,922 2,189,382 10+00 4953.49

R-1OR 593,444 2,189,130 34+91 4935.21

R-1OAL 597,153 2,187,293 10+00 5026.48

R-1OAR 593,383 2,187,623 47+85 4997.72

R-I1L 596,567 2,185,286 10+00 4941.71

R-11R 594,223 2,186,209 35+20 5016.18

Table 3. - Range end coordinates (page 1 of 3).

11
Range State Plane

North

Coordinates

East

Range

Station

Elevation

____________

R-12L 596,787 2,183,661 10+00 4958.50

R-12R 593,338 2,181,392 51+30 4951.77

R-13L 598,041 2,180,579 10+00 5096.39

R-13R 596,384 2,179,565 29+43 4952.85

R-14L 599,139 2,178,125 10+00 5126.88

R-14R 597,780 2,177,388 25+46 4958.83

R-15L 600,190 2,177,160 10+00 5130.88

R-15R 599,580 2,175,601 26+75 4973.79

R-l6L 602,340 2,174,976 10+00 5112.17

-R-16R 600,945 2,173,985 27+11 4979.47

R-17L 604,115 2,170,788 10+00 4939.50

R-17R 602,928 2,169,824 25+30 4949.46

R-1SL 606,968 2,168,478 10+00 4994.91

R-18R 605,201 2,167,850 28+75 5006.77

R-20L 579,326 2,216,463 10+00 4983.01

R-21R 575,943 2,218,757 33+18 4921.68

R-30L 587,267 2,212,999 10+00 4938.91

R-30R 586,875 2,209,859 41+65 4928.76

R-40L 580,458 2,210,691 10+00 4938.32

R-40R 581,211 2,214,826 52+04 4961.83

R-41L 578,340 2,210,256 10+00 4930.07

R-41R 577,707 2,212,202 30+47 4959.98

R-42L 574,679 2,210,598 10+00 4943.09

R-42R 574,714 2,211,410 18+12 4965.54

R-43L 572,053 2,209,129 10+00 4948.79

R-43R 571,389 2,209,557 17+90 5002.19

R-50L 581,822 2,204,335 10+00 4938.19

R-50R 580,959 2,207,861 46+31 4923.68

Table 3. - Range end coordinates (page 2 of 3).

12
Range State Plane

North

Coordinated

East

Range

Station

Elevation

R-51L 580,671 2,202,892 10+00 4927.46

R-5lR 579,872 2,203,306 19+00 4922.49

R-60L 593,900 2,194,423 10+00 4947.93

R-60R 593,918 2,192,468 29+56 4925.00

R-6lL 595,481 2,192,879 10+00 4928.07

R-61R 595,486 2,191,910 19+70 4960.04

R-62L 596,983 2,194,953 10+00 4966.23

R-62R 596,932 2,192,876 30+78 4928.63

R-70L 593,931 2,180,234 10+00 4970.61

R-70R 593,338 2,181,392 23+02 4951.77

Table 3. - Range end coordinates (page 3 of 3).

13
--------

/ DENvER

C

qL/

/

/NORTHSIDE - A P A N 0

0o COLLECTION ____ _____ _____ _____ _____

1enood SYS TEM' I - ____ _____ _____ _____

Springs -.f

..IUCHARLES H. BOUSTEAD TUNNEL I

RUE\L

LAKE J

E L 8 E R T

(51./OAR 4OA DAM)

OLeadyjile DOUGLAS I flçsER VOIR'or

SOUTHSIDE P rw.,. LANEs DAM)

COLLECTIO/1J/'.

LAKES _____• I _____

______________ SYSTEM --.'OTERO POWER PLANT I \

MT EL BERT cONDUIr\ I

EL P A S 0

ado Sprinqs C 14 C V C N N C

POWERPLANT" LINCOLN)

MTELBERTPUMPEDSTOAAiEI

F0UNTA1N VALLEY CONDUIT ____

I _________ __________

UTA/N

- _( W A

PueIo CROWI.frY j eltlb

UEBLO RESEVOI

CroIeyj

I

- -

EXPLANATION

CUSTER I PU EBYLO

/HUERryo( y'

L A S

I

Lamar

ajunto a C

IL,

ARKANSAS VALLEY CONDUIT

PROWCRS

P 0

1'

ANJIMAS

...

RESERVOIR

4)-4. PIPELINE OR CONDUIT

POWER PLANT

•

PUMPING PLANT

TUNNEL

S 0 S 10 IS 20

SCALE OF MILES

Figure 1. - Pueblo Reservoir location map.
Space intentionally left blank due to security concerns 
Space intentionally left blank due to security concerns 
- "I

:' i;

'

9

''

H.

a'.'

4.- -. .

-'

-----.-.-

-

4 11 hTrfl

I ) Ii']

.' ILVt'

7

/ "L,7V

i1'i .

" ." .

* I

,

:

-. 'I -

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- I

-I \ f

'[i

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ç; _-',-j _,.,.,f,.

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- . -,..1'

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-: '' '5 • /;_

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'- -, r'','

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cç^/:U;

JL_C /.:i_

-1'7 I.

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•1•--.-

--I

'../

I 7'

-

.-
WIDTH ADJUSTMENT METHOD fOR REV/S/HG

CON TOUR AREAS iN COFIPU TA TIOiV OF

RESERVOIR SEDIMENTATION

Sediment

Sediment

Rono.-,

Schematic Segment

of Reservoir

Initiøl Survey New Survey

Contour 4reo 4, Contour Area (Computed)

Downstream Width $',' Downstream Width

a Upstream Width W,"' Upstream Width

, I, ,W,ILW,

A, ad0 fz( W01,LW01'

2

Figure 5. - Width adjustment method for revising contour area.

19
C

4920

4910

4900

4890

4880

'18/U

'1860

1850

H 4810

4830

4820

4810

4800

4790

4780

4770

4760

4750

4710

4730

'1721)

AREA (100 ACRES)

61 713 75 72 (39 66 63 (51) 57 51 51 18 15 42 39 36 33 30 27 24 21 18 15 12 1) 13 3 1)

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

-

-

- -

-

- -

- ---- - - - -

/

CAPACIT Y

--- - -- ---

ARE A

------ -

LEGEND

1 1993 SURVEY

1974 (UkIGINIIL) 5UPVLY

0 2 0 4 0 6 0 80 100 120 140 160 180 200 220 24

H

0 260 280 300 320 34

. H

0 360 380 100 420 14 0 460 180 500 520 54

CF1PHCITY (1000 ACRE-rEEL

Figure 6. - Area and capacity curves -Pueblo Reservoir.

I I
4900

4880

PUEBLO RESERVOIR SEDIMENTATION SURVEY

I I I

I

I I I

I

I

J

I

Arkansas River

1993 Thalweg

1974 Thalweg - -

)

a: a:rca: aa:a: rca: a:ccrcrc

torca: cc \\

4860

• 4840 a)

U-

• 4820

4800

4780

4760

4740

4720 -

14 12 10 8 6 4 2

Miles Above Axis of Dam

Figure 7. - Longitudinal profile - Arkansas River.

0
Iw

w

Uz

D

II

I-

>

w

-J

Lu

4950

4900

4850

4800

4750

4709

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 1

ORIGINAL SURVEY 1993 SURVEY

/1 '

_ _

00 20 00 30 00 40 00 50 00 6000 70 00 80 00 90 00 100

DISTANCE - FEET

Figure 8. - Sediment Range 1 - Arkansas River.

00
-------

12-30-lgg3 OR: 5: 11 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a;Duebpr'g2 PLOT 2

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 2

_______ ORIGINAL SURVEY 1993 SURVEY

5000

4950

4900

LU

LU

4850

LU 4800

4750

DO

DISTANCE - FEET

Figure 9. - Sediment Range 2 - Arkansas River.

_ _ _ ___7-

___ ___ __

/

_ _ ________

o0 15 00 20 00 2500 30 00 35 00 40 00 4500 50 00 5500 6000 6500 70 00 751
12-30-1g93 08; 15: 24 BUREAU OF RECLAMATION PLTSY$ VER I PSPLT : etrnrp2 PLOT 3

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 3

_______ ORIGINAL SURVEY 1993 SURVEY

4940

4920

4900 _______ _______ ______ ______ ______ _______

4880

w

w

IL

4860

D

4840

>

w

-J

W 4820

4800

4780

DISTANCE - FEET

Figure 10. - Sediment Range 3 - Arkansas River.

_______________________ _______________________ ______________________ _______________________ _______________________ _______________________ _______________________ t

__________________ __________________ __________________ __________________ __________________ __________________

_______________________ ______________________ ______________________ ______________________ ______________________

__________________ I

-h- __________________ _________________ __________________ _________________

I

__ I

S

__ - __ __ __ __ __

________

S

00 1500 20 00 2500 30 00 3500 40 00 45 00 50 00 5500 60 00 65 00 70 00 75(
12-3o-1g93 08: 15: 36 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: ruebor'Q2 PLOT 4

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 4

_______ ORIGINAL SURVEY ------- 1993 SURVEY

4940

4920

4900

4880

LU

LU

4860

z

cJl 0

4840

LU

-J

LU 4820

4800

4780

DISTANCE - FEET

Figure 11. - Sediment Range 4 - Arkansas River.

00 1500 20 00 2500 3000 3500 40 00 45 00 5000 5500 60(
12-30-1993 08: 15: 48 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: rueborn2 PLOT S

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 5

________ ORIGINAL SURVEY 1993 SURVEY

4940

4920

4900

W 4880

w

UZ 4860

C) C

>

ILl 4840

-J

w

4820

4800

-

DISTANCE - FEET

Figure 12. - Sediment Range 5 - Arkansas River.

00_15 00_20 00

'

2500

JJ

30 00

J

3500_40 00_4500_5000_5500_60 00_65(
-------

4940

4920

4900

Fft 4880

U1

4860

Lij 4840

-j

UJ

4820

4800

478ft

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 6

ORIGINAL SURVEY 1993 SURVEY

________

-----

__s

00 15 00 20 00 2500 30 00 35 00 40 00 45 00 50(

DISTANCE - FEET

Figure 13. - Sediment Range 6 - Arkansas River.
12-3o-e93 09: 5: 09 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: weborg2 PLOT 7

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 6A

_______ ORIGINAL SURVEY ------- 1993 SURVEY

5000

4980

4960

4940

FLu

4920

Z 4900

0

1-4

F4680

Lu

-J

uJ

4860

4840

4820

46O9

DISTANCE - FEET

Figure 14. - Sediment Range 6A - Arkansas River.

)u,AJ

"

_ _ _

L

__

,

_

00 15 00 20 00 25 00

_

30 00 3500

r

40 00

_

4500

_

50 00

_

55(
5000

4980

4960

4940

LU

4q20

4900

I-I

F4880

LU

-J

LU

4860

4840

4820

-------

48 0

r

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 7

_______ ORIGINAL SURVEY 1993 SURVEY

/1

_ _ _ _

_-_ _ _

_ _ _ _

00 15 00 20 00 2500 30 00 35 00 40 00 45

_

00 50

_

00 55

_

00 60

_

00 65(

DISTANCE - FEET

Figure 15. - Sediment Range 7 - Arkansas River.

iO
12-30-1993 OB: 16: 30 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: pueborc2 PLOT g

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 8

_______ ORIGINAL SURVEY 1993 SURVEY

5000

4980

4960

4940

ILU

4920

0 Z 4900

0

It

F4880

LU

-J

LU

4860

4840

4820

-

4809

DISTANCE - FEET

Figure 16. - Sediment Range 8 - Arkansas River.

I

_____

00 1500 20 00 2500 30 00 35 00 40 00 45 00 50(
-------

4980

4960

4940

Fft 4920

IL

1

4900

w 4880

-J

w

4860

4840

48

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 9

ORIGINAL SURVEY 1993 SURVEY

3 r

_____

::-_

_

'

__

00 12 00 1400 1600 18 00 20 00 2200 24 00 26 00 28 00 30 00 32(

DISTANCE - FEET

Figure 17. - Sediment Range 9 - Arkansas River.
12-30-1993 08: 16: 46 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: puebprci2 PLOT ii

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 9A

_______ ORIGINAL SURVEY 1993 SURVEY

4930

4920

4910

4900

Fw

4890

4880 _

4870

w

-J

w

4860

4850

4840

4839

DISTANCE - FEET

Figure 18. - Sediment Range 9A - Arkansas River.

_________

'I

-

00 12 00 1400 1600 18 00 20 00 22 00 24 00 26 00 28 00 3000 32(
- r

-------

__

12-30-1993 08: 16: 55 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: ruborg2 PLOT 12

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 10

_______ ORIGINAL SURVEY 1993 SURVEY

4960

4940

4920

w

w

IL. 4900

z

cD

4880

4860

4840

-

DISTANCE - FEET

Figure 19. - Sediment Range 10 - Arkansas River.

-'p

I00 12 00 14 00 1600 1800 20 00 2200 24 00 2600 2800 30 00 3200 34 00 36
12-30-1993 08: 17: 03 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: puetorg2 PLOT 13

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION IOA

_______ ORIGINAL SURVEY 1993 SURVEY

4940

4930

4920

4910

FuJ

4900

4890

F-

> 4880

uJ

-J

Lu

4870

4860

4850

4841Q0

DISTANCE - FEET

Figure 20. - Sediment Range bA - Arkansas River.

00 1500 20 00 2500 30 00 35 00 40 00 4500 50(
-------

-

4950

4940

4930

4920

tr. 4910

w

IL

I 4900

z

D

4890

>

4880

w

4870

4860

4850

48 49

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION ii

ORIGINAL SURVEY 1993 SURVEY

-p _

00 1200 14 00 16 00 18 00 20 00 22 00 24 00 2600 2800 30 00 3200 34(

DISTANCE - FEET

Figure 21. - Sediment Range 11 - Arkansas River.
C)

4960

4950

4940

4930

Li; 4920

w

UI 4910

z

0

4900

>

j 4890

w

4880

4870

4860

4

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION i2

ORIGINAL SURVEY 1993 SURVEY

1

00 15 00 20 00 2500 30 00 3500 40 00 45 00 50 00 55(

DISTANCE - FEET

Figure 22. - Sediment Range 12 - Arkansas River.
-------

12-30-IYY:3 08: 17: 28 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: oueborg2 PLOT 16

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 13

_______ ORIGINAL SURVEY 1993 SURVEY

4930

4920

4910

w

w

4900

z

-.1 0

4890

4880

4870

DISTANCE FEET

Figure 23. - Sediment Range 13 - Arkansas River.

/

I

I

Ii

//

/

_

T "

00 14 00 16 00 1800 20 00 2200 24 00_2600_2800_30(
12-30-1993 06: 17: 35 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: uebpr2 PLOT 17

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 14

_______ ORIGINAL SURVEY 1993 SURVEY

4930

4920

4g 10

FLU

Lii

Uc

Z 4900

>

LU

-J ___ LU 4890

4880 -

- --

DISTANCE - FEET

Figure 24. - Sediment Range 14 - Arkansas River.

/

_ _ _ _ _ _ _ _

tOO 14 00 1500 16 00 17 00 18 00 19 00 20 00 21 00 2200 23 00 24 00 25t
* t

-------

12-30-1993 08: 17: 41 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: pueborn2 PLOT jB

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 15

_______ ORIGINAL SURVEY 1993 SURVEY

4930

4920

4910

LU

uJ

Li

4900

I-

>

LU

-J

LU 4890

4880

48 7

DISTANCE - FEET

Figure 25. - Sediment Range 15 - Arkansas River.

I- ____

00 14 00 15 00 1600 17 00 18 00 19 00 20 00 21 00 2200 23 00 24 00 2500 26(
12-30-19g3 OB: 17: 47 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: pueborci2 PLOT 19

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 16

________ ORIGINAL SURVEY ------- 1993 SURVEY

4930 -

______ _____ _____ _____ _____ _____ _____ _____ _____ ______ _____ _____

4920

Fw

4910

z

0 D

II

I4900

uJ

-JuJ

4890

488Q3

)0

DISTANCE - FEET

Figure 26. - Sediment Range 16 - Arkansas River.

00 14 00 1500 1600 17 00 18 00 19 00 20 00 21 00 2200 2300 2400 2500 26(
4960

4940

4920

49o0 I-uJ

w

U4880

z

CD

4860

>

UJ

-JLii 4840

4820

4800

478ft

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 20

ORIGINAL SURVEY 993 SURVEY

00 15 00 20 00 25 00 30 00 3500 4000 45 00 50(

DISTANCE - FEET

Figure 27. - Sediment Range 20 - Boggs Creek.
-------

LU

Lii

Uz

0

I-1

I-

>

LU

-j

LU

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 21

_______ ORIGINAL SURVEY j93 SURVEY

4930

4920 //\\\

4910

4900

4690

4660

4870\__________

4860

\

4850 j ______

484j9ooo 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 34(

DISTANCE - FEET

i0

Figure 28. - Sediment Range 21 - Boggs Creek.
4

12-30-1993 09: 16:10 BUREAU OF RECLAMATION PLTSYS VER I PSPLT p:pueborn2 PLOT 22

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 30

_______ ORIGINAL SURVEY 1 993 SURVEY

4940

4930

4920

4910

:I;3 4900

Lii

I-i48 90

z

0

4 880

>

4870

w

4860

4850

4840

483Th - - --

DISTANCE - FEET

Figure 29. - Sediment Range 30 - Above Marina.

00 12 00 14 00 1600 1800 20 00 2200 24 00 2600 2800 3000 3200 3400 3600 3800 4000 42(
-------

5000

4950

ILU

4900

z

0

F4650 uJ

-j

LU

4800

47

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 40

ORIGINAL SURVEY 1993 SURVEY

_ _

/

_ _ _

-----

_

------

_

00 15 00 20 00 2500 30 00 3500 40 00 4500 50 00 55(

DISTANCE - FEET

Figure 30. - Sediment Range 40 - Rock Creek.

t0
-------

-

12-30-19Y3 08: tB: 27 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: puebrg2 PLOT 24

PUEBLO! RESERVOIR

GROUND PROFILE FOR SECTION 4i

_______ ORIGINAL SURVEY 1993 SURVEY

4980

4960

4940

4920

ILU

LU

U4900

2:

D

4880

>

LU

-J

LU 4860

4840

4820

480

- -- - ----

DISTANCE - FEET

Figure 31. - Sediment Range 41 - Rock Creek.

I

-

.---- I -.

00 12 00 14 00 16 00 18 00 20 00 22 00 24 00 2600 2800 30 00 32(
12-3o-lgg3 08: 30: 47 BUREAU OF RECLAMATION PLTSYS VER I PSPLT : pjeborp2 PLOT 25

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 42

________ ORIGINAL SURVEY 1993 SURVEY

4980

4960

4940

F4920

UZ 4900

D

F-

>

Li J 4880

-J

UJ

4860

4840

4829

DISTANCE - FEET

Figure 32. - Sediment Range 42 - Rock Creek.

A •

00 11 00 12 00 13 00 14 00 1500 1600 17 00 18 00 19(
-------

4970

4960

4950

4940

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 43

- ORIGINAL SURVEY 1993 SURVEY

LU

ft 4930

4920

4910

LU

-J

Lii

4900

4890

4880

48

________-_____---._

I

_

00 1150 1200 1250 13 00 1350 14 00 1450 15 00 1550 16 00 1650 17 00 1750 IR(

DISTANCE - FEET

Figure 33. - Sediment Range 43 - Rock Creek.
12-30-1993 08: 31: 30 BUREAU OF RECLAMATION PLTSYS VER 1 PSPLT a: pueborg2 PLOT 27

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 50

_______ ORIGINAL SURVEY 993 SURVEY

4940

4920

4900

FLU

LU

4880

D

4860

4840

4820

480j%c 1500 2000 2500 3000 3500 4000 4500 5000

DISTANCE - FEET

Figure 34. - Sediment Range 50 - Peck Creek.

4
-------

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 51.

_______ ORIGINAL SURVEY j93 SURVEY

4930

4920

4910

ILU 4900

LU

4890

I-

>

Ii-' 4880

-J

4870

4860

4°FbOO 1100 1200 1300 1400 1500 1600 1700 1800 1900 20C

DISTANCE - FEET

Figure 35. - Sediment Range 51 - Peck Creek.
4960

4940

F4920

w

uJ

Li

1

4900

LU 4080

4860

48i9

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 60

ORIGINAL SURVEY 1993 SURVEY

00 12 00 14 00 16 00 1800 20 00 2200 24 00 2600 2800 30(

DISTANCE - FEET

Figure 36. - Sediment Range 60 - Turkey Creek.
-------

4980

4960

4940

FuJ

uJ

LL. 4920

z

D

4900

4880

4860

48

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 6i

- ORIGINAL SURVEY 1993 SURVEY

:00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 1800 1900 20(

DISTANCE - FEET

Figure 37. - Sediment Range 61 - Turkey Creek.
12-3O-19g3 08: 33: 33 BUREAU OF RECLAMATION PLTSYS VER I PSPLT a: pueborci2 PLOT 31

PUEBLO RESERVOIR

GROUND PROFILE FOR SECTION 62

_______ ORIGINAL SURVEY 1993 SURVEY

4970

4960

4950

4940

IuJ

4930 ft

4920

49 1 0

w

-J

w

4900

4890

4880

48710. DO

DISTANCE - FEET

Figure 38. - Sediment Range 62 - Turkey Creek.

-

4

r..

00 12 00 14 00 16 00 1800 20 00 2200 24 00 2600 2800 30 00 32(
Mission

The mission of the Bureau of Reclamation is to manage, develop, and

protect water and related resources in an environmentally and

economically sound manner in the interest of the American Public.