DEADWOOD RESERVOIR

2002 SURVEY

URERE

U.S. Department of the Interior

Bureau of Reclamation
REPORT DOCUMENTATION PAGE Form Approved

0MB No. 0704-0188

1. AGENCY USE ONLY (Leave Blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED

July 2003 Final __________________________________

4. TITLE AND SUBTITLE 5. FUNDING NUMBERS

Deadwood Reservoir PR

2002 Survey

6. AUTHOR (S)

Ronald L. Ferrari _________________________

7. PERFORMING ORGANIZATION NAME (S) AND ADDRESS (ES) 8. PERFORMING ORGANIZATION

Bureau of Reclamation, Technical Service Center, Denver CO 80225-0007 REPORT NUMBER

9. SPONSORING/MONITORING AGENCY NAME (S) AND ADDRESS (ES) 10. SPONSORING/MONITORING

Bureau of Reclamation, Denver Federal Center, P0 Box 25007, AGENCY REPORT NUMBER

Denver CO 80225-0007 DIBR

11. SUPPLEMENTARY NOTES

Hard copy available at Bureau of Reclamation Technical Service Center, Denver, Colorado

1 2a. DISTRIBUTION/AVAILABILITY STATEMENT 1 2b. DISTRIBUTION CODE

13. ABSTRACT (Maximum 200 words)

The Bureau of Reclamation (Reclamation) surveyed Deadwood Reservoir in July 2002 to develop a topographic map and compute

the present storage-elevation relationship (area-capacity tables). The data was used to generate current reservoir capacity since

dam closure on November second of 1930. The underwater survey was conducted in July of 2002 near reservoir elevation 5,325

feet (project datum). The underwater survey used sonic depth recording equipment interfaced with a global positioning system

(GPS) that gave continuous sounding positions throughout the underwater portions of the reservoir covered by the survey vessel.

The above water survey was conducted on August 24, 2002 near reservoir elevation 5,299.6 feet. The above-water topography was

determined by a GPS controlled LiDAR (light distance and ranging) method to developed reservoir contours from elevation 5,300

and above. The new topographic map of Deadwood Reservoir was developed from the combined 2002 underwater and above

water-measured topography.

As of July 2002, at top of conservation water surface elevation (feet) 5,334.0, the surface area was 3,115 acres with a total capacity

of 153,992 acre-feet.

14. SUBJECT TERMS 15. NUMBER OF PAGES

reservoir area and capacity! sedimentationl reservoir surveys! sonar! multibeam! contour ______________________

area/ reservoir area! sedimentation survey! global positioning system 16. PRICE CODE

17. SECURITY 18. SECURITY 19. SECURITY CLASSIFICATION 20. LIMITATION OF

CLASSIFICATION CLASSIFICATION ABSTRACT

OF REPORT OF ABSTRACT

OF THIS PAGE

UL IJL UL

UL

________________________ ____________________

NSN 7540-01-280-5500 Standard Form 298 (Rev. 2-89)

Prescril,edby ANSI Std. 239-18

298-102
Deadwood Reservoir

2002 Survey

by

Ronald L. Ferrari

Sedimentation and River Hydraulics Group

Water Resources Services

Technical Service Center

Denver, Colorado

July 2003
ACKNOWLEDGMENTS

The Bureau of Reclamation!s (Reclamation) Sedimentation and River Hydraulics Group of

the Technical Service Center (TSC) prepared and published this report. Ronald Ferrari

and Sharon Nuanes of the TSC conducted the hydrographic survey. Horizons, Inc., under

contract with the Pacific Northwest Regional Office, conducted the above water survey.

Ronald Ferrari completed the data processing to generate the new topographic map and

area-capacity tables. Sharon Nuanes of the TSC completed the final map development.

Kent Collins of the TSC performed the technical peer review of this documentation.

Mission Statements

The mission of the Department of the Interior is to protect and provide access to our

Nation's natural and cultural heritage and honor our trust responsibilities to Indian Tribes

and our commitments to island communities.

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.

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 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 4

Reservoir Operations 5

Hydrographic Survey Equipment and Method 5

Deadwood Reservoir Datum 8

Reservoir Area and Capacity 8

Topography Development 8

Development of 2002 Contour Areas 10

2002 Storage Capacity 10

Reservoir Analyses 11

References 12

TABLES

Table

1 Reservoir sediment data summary (page 1 of 3) 13

1 Reservoir sediment data summary (page 2 of 3) 14

I Reservoir sediment data summary (page 3 of 3) 15

2 Summary of 2002 survey results 16

FIGURES

Figure

1 Deadwood Reservoir location map 2

2 Deadwood Dam, plan and section 3

3 Hydrographic survey vessel 6

4 Multibeam collection system 7

5 Deadwood Reservoir LiDAR coverage 9

6 Deadwood Reservoir topographic map, 1 17

7 Deadwood Reservoir topographic map, 2 19

8 Deadwood Reservoir topographic map, 3 21

9 2002 area and capacity curves 23

in

INTRODUCTION

Deadwood Dam and reservoir, features of the Boise Project, are located in Valley County about

25 miles southeast of the town of Cascade and 53 miles northeast of Boise, Idaho (fig. 1). The

dam and reservoir are located on the Deadwood River that is a tributary of the south fork of the

Payette River. Deadwood Reservoir is the primary storage facility for the Emmett frrigation

District, and in conjunction with Cascade Reservoir on the North Fork of the Payette River,

provides irrigation water for lands in the Payette Division of the Boise Project. The dam and

reservoir are operated and maintained by the Bureau of Reclamation's Snake River Area Office

West Unit - Black Canyon Dam Field Branch.

Deadwood Dam was completed in 1931 with closure on November 2, 1930. The dam is a

concrete arch structure whose dimensions are (fig. 2):

Hydraulic height1 137 feet2

Top width 9 feet

Crest of Dam elevation 5,340.0 feet

Structural height 165 feet

Crest length 749 feet

Parapet wall elevation 5,343.5 feet

An overflow spillway occupies 100 feet of the central portion of the dam and two outlets are

provided near the bottom right of the spillway. The spillway is an uncontrolled overflow type

with a crest elevation of 5,334.0 and capacity of 11,300 cfs (cubic feet per second) at reservoir

water surface elevation 5,343.5 (top of parapet walls). The outlet works consist of a trashracked

intake structure, two 66-inch inside diameter conduits through base of the dam and a valve house

containing two 4.5 foot by 4.5 foot pressure emergency gates. Capacity of outlet works is

1,980 cfs at reservoir water surface elevation 5,334.0. A stilling basin is utilized by the spillway

and outlet works.

The total drainage area above Deadwood Dam is 112 square miles. Deadwood Reservoir has an

average width of 0.8 miles with a length of around 3.9 miles at reservoir elevation 5,334.0.

'The definition of such terms as hydraulic height, structural height, and 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.

2Elevation levels are shown in feet. All elevations shown in this report are based on the original project datum

established by U.S. Bureau of Reclamation that was found by this study to be around 18.6 feet greater than the NAVD88.

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Figure 1. - Deadwood Reservoir location map.

2
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SUMMARY AND CONCLUSIONS

This Reclamation report presents the 2002 results of the survey of Deadwood Reservoir. The

primary objectives of the survey were to gather data needed to:

• develop reservoir topography

• compute area-capacity relationships

A GPS control and aerial collection survey was contracted by the Pacific Northwest Regional

Office to establish the study area control and measure the above water portions of the reservoir

area. The survey established horizontal and vertical control on existing Reclamation monuments

located on the left (east) and right (west) abutments of the dam. The horizontal control was

established in the Idaho west state plane coordinate zone of the North American Datum of 1983

(NAD83) and the vertical control was tied to the North American Vertical Datum of 1988

(NAVD88) and the Reclamation project datum. All elevations in this report are referenced to the

Reclamation project or construction datum that was found to be around 18.6 feet greater than the

NAVD88.

Due to the rapidly dropping reservoir water surface levels, the underwater survey was conducted

in July of 2002 near reservoir water surface elevation 5,325 prior to the contracted GPS control

survey. Prior to the underwater data collection, the hydrographic survey crew measured an

absolute position on the Reclamation monument located on the west abutment of the dam. Using

Real-time Kinematic (RTK) GPS, measurements were taken on the east monument, a temporary

control point, and the reservoir water surface during the underwater survey. During post

processing these measurements were shifted to match the horizontal and vertical control

established by the GPS control survey. The bathymetric survey determined sounding locations

throughout the reservoir using sonic depth recording equipment interfaced with RTK GPS. The

bathymetric system continuously recorded depth and horizontal coordinates of the survey boat as

it was navigated along grid lines covering Deadwood Reservoir. The positioning system

provided information to allow the boat operator to maintain a course along these predetermined

grid lines. Water surface elevations measured by the reservoir gauge (tied to the Reclamation

vertical datum) and the RTK GPS were recorded during the time of collection and used to

convert the sonic depth measurements to true reservoir bottom elevations.

The above water topography was measured on August 24 of 2002 near reservoir water surface

elevation 5,299.6 by a contract aerial survey. The aerial survey was conducted using a LiDAR

(Light Detection and Ranging) acquisition method that utilized GPS for control. The LiDAR

instrument transmits light to measure the ground elevations below the aircraft. The airborne GPS

data was processed as a kinematic survey and resulted in detailed x,y,z data sets and 2-foot

reservoir topography from elevation 5300 and above (Horizon's Inc.).

The 2002 Deadwood Reservoir topographic map is a combination of the 2002 aerial and

underwater survey data. The 2002 reservoir surface areas at predetermined contour intervals

were generated by a computer graphics program using the collected reservoir data. The 2002

area and capacity tables were produced by a computer program that used the measured contour

4
surface areas and a curve-fitting technique to compute the reservoir's area and capacity at

prescribed elevation increments (Bureau of Reclamation, 1985).

Tables 1 and 2 contain summaries of the Deadwood Reservoir sedimentation and watershed

characteristics for the 2002 survey. The 2002 survey determined that the reservoir has a total

storage capacity of 153,992 acre-feet and a surface area of 3,115 acres at active conservation

reservoir elevation 5,334.0.

RESERVOIR OPERATIONS

Deadwood Dam operates to provide regulation flows for the Black Canyon Dam powerplant and

supply water for irrigation for the Payette Division and Emmett Irrigation District. The July

2002 area-capacity tables show 184,682 acre-feet of total storage at maximum water surface

elevation 5,343.5. The 2002 survey measured a minimum bottom elevation of 5,195.0. The

following values are from the July 2002 area-capacity tables:

30,690 acre-feet of surcharge between elevation 5,334.0 and 5,343.5.

153,992 acre-feet of conservation use between elevation 5,202.75 and 5,334.0.

No measurable capacity below elevation 5,202.75.

The Deadwood Reservoir inflow and end-of-month stage records in table 1, for the operation

period of water years 1931 through 2002, show the measured annual outflow and reservoir

fluctuation since dam closure. These values were obtained from USGS and Reclamation records.

The outflow data, that is regulated by the reservoir, was measured at the USGS gage located just

downstream of the dam and is called "Deadwood River below Deadwood Reservoir near

Lowman, Idaho." Reclamation has monthly computed inflow data for all years of record, but for

the purpose of this study time wasn't taken to compute the annual values of all of this data. The

outflow values don't account for the annual runoff during initial filling of the reservoir and the

years of total drawdown of the reservoir for repairs, but the measured outflow does provide an

estimated total amount of runoff that has occurred since dam closure in November of 1930.

Since initial filling, the extreme storage fluctuations of Deadwood Reservoir ranged from

elevation 5,205 in 1951, 1952, 1973, and 1974 to the maximum-recorded elevation of 5,337.4 in

1974 and 1982. The elevation 5,205 measurements indicate total draining of the reservoir for

repairs.

HYDROGRAPHIC SURVEY EQUIPMENT AND METHOD

The hydrographic survey equipment was mounted in the cabin of a 24-foot trihull aluminum

vessel equipped with twin in-board motors (fig. 3). The hydrographic system contained on the

survey vessel consisted of a GPS receiver with a built-in radio and an omnidirectional antenna,

depth sounders, a helmsman display for navigation, computers, and hydrographic system

software for collecting and processing the underwater data. An on-board generator supplied

power to the equipment.

5
Figure 3. - Hydrographic survey vessel

The shore equipment included a second GPS receiver with an external radio and an

omnidirectional antenna. The GPS receiver and antenna were mounted on a survey tripod over a

known datum point that had a clear line-of-sight to the survey boat over the vast majority of the

reservoir. 12-volt batteries provided power for the shore unit.

The Sedimentation and River Hydraulics Group conducts their bathymetric surveys using Realtime Kinematic (RTK) GPS. The major benefit of RTK versus differential GPS (DGPS) is that

precise heights can be measured in real time for monitoring water surface elevation changes. The

basic outputs from a RTK receiver are precise 3D coordinates in latitude, longitude, and height

with accuracies on the order of 2 centimeters horizontally and 3 centimeters vertically. The

output was in the GPS thtum of WGS-84 that the hydrographic collection software converted

into state plane coordinates.

In 2001 the Sedimentation and River Hydraulics Group began utilizing an integrated multibeam

hydrographic survey system. The system consists of a single transducer mounted on the center bow

or forward portion of the boat. From the single transducer a fan array of narrow beams generate a

detailed cross section of bottom geometry as the survey vessel passes over the areas to be mapped.

The system transmits 80 separate 1-1/2 degree slant beams resulting in a I 20-degree swath from the

transducer. The 200 kHz high-resolution multibeam echosounder system measures the relative water

6
depth across the wide swath perpendicular to the vessel's track. Figure 4 illuminates the swath of the

sea floor that is about 3.5 times the water depth below the transducer.

Figure 4. - Multibeain collection system

The multibeam system is composed of several instruments that are all in constant communication

with a central on-board notebook computer. The components include the RTK UPS for

positioning; a motion reference unit to measure the heave, pitch, and roll of the survey vessel; a

gyro to measure the yaw or vessel attitude; and a velocity meter to measure the speed of sound

through the vertical profile of the reservoir water. With the proper calibration, the data

processing software utilizes all the incoming information to provide an accurate detailed x,y,z

data set of the lake bottom.

The Deadwood Reservoir bathymetric survey collection was conducted from July 11 through

July 14 of 2002 between water surface elevation 5,324.1 and 5,325.2 (Reclamation project

datum). The survey was run using the instrumentation described above where the survey system

software continuously recorded reservoir depths and horizontal coordinates as the survey vessel

moved across close-spaced grid lines covering the reservoir area. Most transects (grid lines)

were run in a north or south direction of the reservoir where the multibeam swaths in the deeper

portions of the reservoir overlapped. Even though the multibeam system could have provided

full bottom coverage, time and budget didn't allow for this to occur in the shallow portions of the

reservoir. Detailed information along the face of the dam was collected with the multibeam

collection system, but power surges during the time of collection at the dam along with

positioning and depth-sounding anomalies affected the detail of the mapping along the face of

the dam. The loss of this additional data didn't have a significant impact on the area

computations since it only occurred near the face of the dam.

The above water topography was measured on August 24 of 2002 near reservoir water surface

elevation 5,299.6 by a contract aerial survey. The aerial survey was conducted using a LiDAR

acquisition method that utilized GPS for control and the LiDAR instrument that transmits light to

measure ground elevations below the aircraft. The methodology of the multibeam and LiDAR

systems are veiy similar. The airborne GPS data was processed as a kinematic survey and

7
resulted in detailed x,y,z data sets and 2-foot reservoir topography from elevation 5300 and

above. Figure 5 provides an orthophoto mosaic of the reservoir area covered by the LiDAR

survey.

Deadwood Reservoir Datums

A GPS survey was contracted by the Pacific Northwest Regional Office to establish the study

area control at Deadwood Dam on existing Reclamation monuments located on the west and east

abutments of the reservoir. The horizontal control was established in the Idaho west state plane

coordinate zone ofNAD83. The vertical control was tied to the NAVD88 and the Reclamation

project vertical datum. All elevations in this report are referenced to the Reclamation project or

construction datum that was found to be around 18.6 feet greater than the NAVD88. Following

are the results from the control survey.

Name Latitude

(NAD83)

Longitude

(NAD83)

Ellipsoid

Height

Idaho West

(North)

NAD83

(West)

NAVD88

Elevation

BOR*

Elevation

BOR

NAVD88 +

East 44°17'37.55909" 115°38'41.51389 527395 95746740 2652193.53 5322.06 5340.622 18.56

West 440I734.40889 I 15°38'47,92204" 5273.86 957147.82 2651727.87 5322.00 5340.609 18.61

* The Reclamation elevations are from a previous level survey.

Due to the rapidly dropping reservoir water surface levels, the underwater survey was conducted

prior to the contracted control survey. In order to tie all survey data together the hydrographic

survey crew measured an absolute position on the Reclamation monument located on the dam's

west abutment. Using Real-time Kinematic (RTK) GPS, measurements were taken on the east

monument and a temporary control point used for the GPS base station during the underwater

survey. During post processing all the bathymetric measurements were shifted slightly to match

the horizontal control established by the GPS control survey and vertical control established by a

previous Reclamation level survey. The shift was determined to be (+) 2.35 feet to the north

coordinates and (+) 0.97 feet to the west coordinates. All underwater measurements were tied to

the Reclamation's reservoir water surface gage readings recorded at the time of the underwater

survey.

RESERVOIR AREA AND CAPACITY

Topography Development

Using ARC/INFO the topography of the reservoir was developed from the combined underwater

and above water data (ESRI 1992). ARC/INFO is a software package for development and

analysis of geographic information system (GIS) layers and development of interactive GIS

applications. The underwater collected data was processed using the hydrographic system

software that was also used for the onboard data collection. The analysis included applying all

measurements such as vessel location and corrections for the roll, pitch, and yaw effects. The

other corrections included applying the sound velocity of the reservoir water column and

converting all depth data points to elevations using the measured water surface elevation at the

8
r

Figure 5 - Deadwood Reservoir LiDAR Coverage

9
time of collection. Due to the massive amount of data, the multibeam data was filtered by taking the

measured maximum depth and location for each 5-foot cell or grid of the reservoir area surveyed.

The resulting data set was in x,y,z format and contained over two million data points.

The contractor provided the above water LiDAR data in several formats consisting of AutoCAD

drawing files and the x,y,z data sets used to generate the drawing contours. The x,y,z data sets

were used for the final analysis due to the large size of the drawing files and since the reservoir

surface areas needed to be computed for the entire reservoir area. The x,y,z data was labeled 3D-

"edited surface" and represented the final bare earth LiDAR measurements. The resulting data

set was in x,y,z format and contained nearly two million data points.

Using the APPEND option in ARC/INFO, the two data sets where merged resulting in a x,y,z

data set ofjust over four million data points. Using ARCEDIT, a clip of the 2002 Deadwood

Reservoir data was developed such that interpolation was not allowed to occur outside of this

boundary. Contours for the reservoir area inside this clip were computed from the combined

2002 data sets using the triangular irregular network (TIN) surface-modeling package within

ARC/INFO. A TIN is a set of adjacent, non-overlapping triangles computed from irregularly

spaced points with x,y coordinates and z values. The TIN method was designed to deal with

continuous data such as elevations. The TIN software uses a method known as Delauna3/s

criteria for triangulation where triangles are formed among all data points within the polygon

clip. The method requires that a circle drawn through the three nodes of a triangle will contain

no other point, meaning that sample points are connected to their nearest neighbors to form

triangles using all collected data. Elevation contours are then interpolated along the triangle

elements. The linear interpolation option of the ARC/INFO TINCONTOTIR command was used

to interpolate contours from the Deadwood Reservoir TIN. The surface areas at 1-foot

increments were also computed from the developed TIN from elevation 5,195.0 to 5,350.0. The

contour topography at 2-foot intervals is presented on figures 6, 7, and 8.

Development of 2002 Contour Areas

The 2002 contour surface areas for Deadwood Reservoir were computed at 1-foot increments,

from elevation 5,196.0 to 5,350.0, using the Deadwood Reservoir TIN discussed above. The

2002 survey measured a minimum reservoir bottom elevation of 5,195.0. These calculations

were performed using the ARC/INFO VOLUME command. This command computes areas at

user specified elevations directly from the TIN and takes into consideration all regions of equal

elevation.

2002 Storage Capacity

The storage-elevation relationships based on the measured surface areas were developed using

the area-capacity computer program ACAP85 (Bureau of Reclamation, 1985). Computed surface

areas from the developed TIN, at 2-foot contour intervals, from reservoir elevation 5,196.0 to

elevation 5,350.0 were used as the control parameters for computing the Deadwood Reservoir

capacity. The program can compute an area and capacity at elevation increments 0.01- to 1.0-

foot by linear interpolation between the given contour surface areas. The program begins by

testing the initial capacity equation over successive intervals to ensure that the equation fits

:io
within an allowable error limit. The error limit was set at 0.00000 1 for Deadwood Reservoir.

The 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 basic area curve over that interval) is utilized until it exceeds

the error limit. Thus, the capacity curve is defined by a series of curves, each fitting a certain

region of data. Differentiating the capacity equations, which are of second order polynomial

form, derives final area equations:

y = a1 + a2x + a3x2

where: y = capacity

x = elevation above a reference base

a1 = intercept

a2 and a3 coefficients

Results of the 2002 Deadwood Reservoir area and capacity computations are listed in table 1 and

columns 4 and 5 of table 2. On table 2, columns 2 and 3 list the original surface areas and

capacities projected from the area and capacity curve dated 1935. A separate set of 2002 area

and capacity tables has been published for the 0.01, 0.1 and 1-foot elevation increments (Bureau

of Reclamation 2003). A description of the computations and coefficients output from the

ACAP85 program is included with these tables. Both the original and 2002 area-capacity curves

are plotted on figure 8. As of July 2002, at maximum reservoir water surface elevation 5,343.5,

the surface area was 3,343 acres with a total capacity of 184,682 acre-feet.

RESERVOIR ANALYSES

Figure 8 is a plot of Deadwood Reservoir's original area and capacity data versus the 2002

measured area and capacity. The surface area curves illustrate the difference between the

original survey of unknown origin and the very detailed 2002 survey of the Deadwood Reservoir

area. The original surface areas and capacity values were projected from curves on a 1935

drawing labeled X-D-767 while the 2002 curves were developed from the 2002 survey results.

The 2002 study assumes the difference between the two surveys is due to the detail of collection

and not loss of surface area and resulting capacity due to sediment inflow. It is assumed the

original survey was conducted by a plane table type survey prior to construction and clearing of

the reservoir area where the detail of collection would have been affected by the forested terrain.

The 2002 aerial survey was conducted near the Reclamation recorded gage reservoir elevation

5,299.4 which is over forty feet lower than the maximum reservoir water surface elevation of

5,343.5. This forty vertical feet of reservoir area is fairly clear of thick vegetation that would

have impeded true ground measurements during the original survey. Another explanation could

be a possible datum shift between the original and 2002 surveys. The 2002 underwater survey

was processed utilizing the Reclamation gage measurements recorded at the time of the survey.

Spot check of the x,y,z aerial data set found good elevation comparisons between the measured

2002 underwater data set and the Reclamation gage readings recorded at the time of aerial

collection. Column 6 and 7 on table 2 list the differences between the two surveys with the

11
conclusion that the difference is due primarily to the variation in the levels of detail and accuracy

between the two surveys.

REFERENCES

American Society of Civil Engineers, 1962. Nomenclature for Hydraulks, ASCE Headquarters,

New York.

Bureau of Reclamation, 1981. Project Data, Denver Office, Denver CO.

Bureau of Reclamation, 1985. Surface Water Branch, ACAP85 User's Manual, Technical

Service Center, Denver CO.

Bureau of Reclamation, 1987(a). Guide for Preparation of Standing Operating Procedures for

Bureau of Reclamation Dams and Reservoirs, U.S. Government Printing Office,

Denver, CO.

Bureau of Reclamation, 1987(b). Design of Small Dams, U.S. Government Printing Office,

Denver CO.

Bureau of Reclamation, July 2002. Denver Office, Deadwood Reservoir Area and Capacity Tables,

Project, Pacific Northwest Region, Boise, ID.

Corps of Engineers, January 2002. Engineer and Design - Hydrographic Surveying,

EM1 110-2-1003, Department of the Army, Washington DC.

(www .usace.army.millinetiusace-docs/eng-manuals/em 1110-2- 1003/toc.htm).

Environmental Systems Research Institute , Inc. (ESRI), 1992. ARC Command References.

Horizon's Inc., 2002. Deadwood Reservoir, ID. LiDAR Report, Report File: 02-5726_LiDARReport.doc, Rapid City, SD.

12
RESERVOIR SEDIMENT

DATA SUNMARY Deadwood Reservoir

MANE OF RESERVOIR

1

DATA SHEET NO.

O 1. OWNER Bureau of Reclan,ation 2. STREAN Deadwood River 3. STATE Idaho

A 4. SEC. 8 TWP. 11 N RANGE 7 E 5. NEAREST P.O. Lowman 6. COUNTY Valley

M 7. LAT 44° 17 38' LONG 115° 38' 41" 8. TOP OF DAM ELEVATION 5,340.0' 9. SPILLWAY CREST EL 5,334.0

R 10. STORAGE 11. ELEVATION 12. ORIGINAL 13. ORIGINAL 14. GROSS 15. DATE

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

S FEET BEGAN

E _______________________ ______________________ ______________________

R a. SURCHARGE 5,343.5

____________________

29,600

_

193,600

V

b. FLOOD CONTROL 0

I C. POWER 11/30

R d. JOINT USE 16. DATE

e. CONSERVATION 5,334.0 164,000 164,000'

8. INACTIVE

________________

ION

BEGAN

g. DEAD 5,202.75

___________________ 11/30

-

17. LENGTH OF RESERVOIR 3.9 AVG. WIDTH OF RESERVOIR 0.8

B 18. TOTAL DRAINAGE AREA 112 SQUARE 22. MEAN ANNUAL PRECIPITATION 11.7'

19. NET SEDIMENT CONTRIBUTING AREA 112 SQUARE 23. MEAN ANNUAL RUNOFF 28.0 °

I 20. LENGTH WILES AV. WIDTH 24. MEAN ANNUAL RUNOFF 167,200° ACREN

21. MAX. ELEVATION WIN. ELEVATION 25. ANNUAL TEMP. MEAN 52°F RANGE -23°F to 108°F'

S 26. DATE OF 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. . INTERVAL

11/30 Contour (R) 5-ft 3,146' 164,000' 0.98

Y

7/02 71.7 71.7 Contour (D) 1-ft 3,115 153,992 0.92

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

7/02 167,200 319,4008 11,985,600 167,200 11,985,600

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

SURVEY

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

7/02

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

SURVEY MT. (#/FT')

_____________________________ INFLOW, PPM

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

DATE ANNUAL DATE PER. TOT.

7/02

9 9

26.

DATE

43. DEPTH DESIGNATION RANGE BY RESERVOIR ELEVATION

SURVEY

PERCENT OF TOTAL SEDIMENT LOCATED WITHIN DEPTH DESIGNATION

26.

DATE

44. REACH DESIGNATION PERCENT OF TOTAL ORIGINAL LENGTH OF RESERVOIR

SURVEY

0-10 10-

20

20-

30

30-

40

40-

50

50-

60

60-

70

70-

80

80-

90

90-

100

100-

105

105-

110

110- 115-

115 120

120-

125

________

PERCENT OF TOTAL SEDIMENT LOCATED WITHIN REACH DESIGNATION

Table 1. - Reservoir sediment data summary (page 1 of 3).

13
45. RANGE IN RESERVOIR OPERATION'

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

1930 1931 - - 71,300

1932 - - 104,000 1933 - 152,000

1934 - - 182,500 1935 - - 115,800

1936 5,331.5 5,260.1 109,900 1937 5,323.6 5,286.7 113,200

1938 5,336.6 5,282.8 132,700 1939 5,334.8 5,292.6 172,900

1940 5,335.6 5,291.9 120,800 1941 5,335.6 5,305.5 90,340

1942 5,336.0 5,308.8 195,600 1943 5,337.1 5,305.7 208,100

1944 5,334.7 5,291.6 166,200 1945 5,335.1 5,287.0 115,900

1946 5,335.2 5,303.1 189,300 1947 5,336.4 5,291.0 217,900

1948 5,336.6 5,290.5 155,700 1949 5,334.6 5,298.6 138,500

1950 5,335.6 5,305.0 150,100 1951 5,334.7 5,205.0° 319,400

1952 5,335.7 5,205.0° 149,600 1953 5,336.4 5,285.4 191,900

1954 5,336.0 5,288.2 213,960 1955 5,334.3 5,288.1 127,200

1956 5,336.4 5,284.7 259,700 1957 5,336.2 5,284.8 173,200

1958 5,336.3 5,275.5 198,900 1959 5,335.6 5,282.8 190,400

1960 5,335.3 5,289.1 -

145,500 1961 5,327.5 5,278.7 147,500

1962 5,335.8 5,280.5 143,400 1963 5,336.4 5,287.6 188,600

1964 5,336.1 5,293.4 160,300 1965 5,336.8 5,294.2 245,700

1966 5,335.5 5,294.4 139,900 1967 5,336.2 5,282.9 180,900

1968 5,335.4 5,287.2 147,900 1969 5,335.4 5,289.5 193,700

1970 5,336.8 5,294.5 201,700 1971 5,337.3 5,295.9 293,400

1972 5,334.8 5,294.9 208,200 1973 5,329.3 5,205 192,600 -

1974 5,337.4 5,205 ° 241,000 1975 5,334.6 5,297.3 173,500

1976 5,335.6 5,296.6 188,200 1977 5,312.2 5,273.5 91,410

1978 5,335.2 5,275.0 174,700 1979 5,332.3 5,280.7 131,900

1980 5,335.9 5,281.6 145,800 1981 5,336.3 5,301.0 175,900

1982 5,337.4 5,296.1 253,700 1983 5,337.1 5,298.2 243,500

1984 5,333.1 5,299.4 201,400 1985 5,335.7 5,292.4 166,700

1986 5,337.1 5,295.6 207,400 1987 5,328.2 5,289.6 106,200

1988 5,324.8 5,283.4 101,500 1989 5,334,6 5,285.4 108,300

1990 5,335.0 5,297.6 118,100 1991 5,328.5 5,294.8 97,700

1992 5,315.2 5,282.2 111,700 1993 5,335.8 5,282.7 134,700

1994 5,327.4 5,290.2 124,900 1995 5,336.2 5,289.9 143,000

1996 5,336.9 5,318.6 255,900 1997 5,335.8 5,319.3 247,600

1998 5,335.4 5,318.4 181,100 1999 5,335,4 5,303.8 214,600

2000 5,335.2 5,308.8 153,700 2001 5,320.2 5,289.7 111,200

2002 5.326.c S.289.4 64.000 ______________ _____________

46. ELEVATION - AREA - CAPACITY DATA FOR 2002 CAPACITY'

ELEVATION AREA CAPACITY ELEVATION AREA CAPACITY ELEVATION AREA CAPACITY

5,195

5,220

5,235

5,250

5,265

5,280

5,295

5,310

5,325

5,335

5,345

0

57

202

474

868

1,343

1,798

2,342

2,850

3,140

3,378

0

270

2,065

7,001

19,944

33,432

57,020

88,127

127,113

157,119

189,723

5,210

5,225

5,240

5,255

5,270

5,285

5,300

5,315

5,330

5,340

5,350

5

92

280

591

1,017

1,500

1,992

2,515

3,003

3,260

3,498

17

639

3,264

9,655

21,651

40,538

66,457

100,272

141,754

173,127

206,908

5,215

5,230

5,245

5,260

5,275

5,290

5,305

5,320

5,334

5,343.5

22

140

372

729

1,177

1,649

2,166

2,685

3,115

3,343

72

1,216

4,890

12,954

27,126

48,412

76,859

113,272

153,992

184,682

Table 1. - Reservoir sediment data sununary (page 2 of 3).

14
47. REMARKS AND REFERENCES

Top of parapet wall, elevation of 5,343.5, forms a continuous water barrier. All elevations are in feet and

based on the original project datum established by Reclamation that were found by the 2002 study to be around

2

18.6 feet greater then the NAVD88.

Uncontrolled overflow spiliway.

Capacity pro3ected from area and capacity curves, dated 3/8/35, and from reservoir capacity allocation table.

Bureau of Reclamation Project Data Book, 1981. Values for Boise Project.

6

Calculated using mean annual runoff value of 167,200 AF, item 24, 11/30 through 7/02. (See remark #6).

USGS discharges just downstream of dam by Water year, from 11/30 through 7/02, at gage Deadwood River Below

Deadwood Reservoir, Near Lowman, ID. Provides total inflow information. Values affected by years of

filling and years of total drawdown for dam construction (1951, 1952, 1973 & 1974)

Surface area & capacity at elevation 5,334.0 computed by ACAP program.

NOT INFLOW VALUES. Values are measured USGS discharges just downstream of dais by Water year, from 11/30

through 7/02, at gage 'Deadwood River Below Deadwood Reservoir, Near Lowman, ID. Provides total inflow

information. Values affected by years of filling and years of total drawdown for dam construction (1951,

1952, 1973 & 1974) . Maximum and minimum elevations from available USGS published records. Information

provided to USGS by Reclamation. Reservoir drained in 1951, 1952, 1973 and 1974 for repairs.

No computed sediment volumes due to unknown accuracy of 1930 surface area and capacity values.

Capacities computed by Reclamation's ACAP computer program.

48. AGENCY MAKING SURVEY Bureau of Reclamation

49. AGENCY SUPPLYING DATA Bureau of Reclamation DATE April 2003

Table 1. ReservoIr sediment data summary (page 3 of 3).

15
1 2 3 4 5 6 7 8

2002 2002 Percent_of

Elevations Original Original 2002 2002 Volime Percent of Reservoir

Survey Capacity Survey Survey Difference Difference Depth

(feet) (acres) (acre-f eetJ (acres) (acre-f aeti _______ _______ _______

5,350.0 ________ ____________

3,498 206,908 _________ _______ _________

5,345.0 ____________ _______

3,378 189,723 _____________ _________ ____________

5,343.5 ____ _______

3,343 184,682 _______

100.0

5,340.0 ___________3,260 -173,127 ____________ __________97.6

5,335.0 3,140 157,119 94.3

5,334.0 3,146 164,000 3,115 153,992

_____

10,008

_____

100.0 93.6

5,330.0 3,046 146,250 3,003 141,754 4,496 44.9 90.9

5,325.0 2,923 -

131,220 2,850 127,113 4,107 41.0 87.5

5,320.0 ______2,754 117,210 2,685 113,272 3,938 39.3 84.2

5,315.0 2,581 104,150 2,515 100,272 3,878 38.7 80.8

5,310.0 2,400 91,710 2,342 88,127 3,583

-

35.8 77.4

5,305.0 2,238 80,730 2,166 -76,859 3,871 38.7 74.1

5,300.0 2,062 70,000 1,992 66,457 3,543 35.4 70.7

5,295.0 1,900 60,000 1,798 57,020 2,980 29.8 67.3

5,290.0 1,723 50,475 1,649 48,412 2,063 20.6 64.0

5,285.0 1,554 42,195 1,500 40,538 1,657 16.6 60.6

5,280.0 1,400 34,524 1,343 -33,432 1,092 _______

10.9 57.2

5,275.0 1,246 28,095 1,177 27,126 969 9.7 53.9

5,270.0 1,100 22,380 1,017 21,651 729 7.3 50.5

5,265.0 931 17,317 868 16,944 373 3.7 47.1

5,260.0 762 13,170 729 12,954 216 2.2 43.8

5,255.0 623 10,000 591 9,655 345 3.4 40.4

5,250.0 500 7,317 474 7,001 316 3.2 37.0

5,245.0 400 5,122 372 4,890 -

232 2.3 33.7

5,240.0 292 3,170 280 -3,264 -94 -0.9 30.3

5,235.0 200 1,950 202 2,065 -115 -1.1 26.9

5,230.0 131 1,220 140 1,216 _________

4 0.0 23.6

5,225.0 85 700 92 639 61 0.6 20.2

5,220.0 46 240 57 270 -30 -0.3 16.8

5,215.0 25 10 22 72 -62 -0.6 13.5

5,210.0 -15 5 5 17 -12 -0.1 10.1

5,195.0 0 0 0 0 0 0.0 0.0

1 Elevation of reservoir water surface.

2 Original reservoir surface area projected from 1935 curve.

3 Original reservoir_capacity projected_from 1935 curve.

4 Reservoir surface area from 20 02 survey. ___________

5

__________

Reservoir capacity computed from 2002 surface areas using PCAP.

_____________

6 Measured volume difference column (3) - column(S).

7

_________ ______

Measured difference expressed in percentage of total 10,008 at elevation 5,334.0.

8 Depth of reservoir expressed in percentage of total_depth of 148.5 feet.

__ p __

Table 2. - Sunmiary of 2002 survey results

16
17

Figure 6. - Deadwood Reservoir topographic map.
union-f

Location

N

W E

S

ftf/

' /Xi' 1

5ni/. /. W

Detailed topography developed by

2002 arelal and underwater data.

Vertical datum based on original

Project datum established by US.

Bureau of Reclamation that is

18.6 feet greater than the North

American Vertical Datum of 1988

Horizontal datum based on Idahos

State Plane Coordinate Sysytem,

West Zone (NADB3)

4' O4'iZ

Y11Z

&'W K2e/R

/O4J,

PE4ZW #f$El'!II

Taco/ocr

LWA?/8 T1i7iVIC4L APPkVML

0/lICKED 81 API//OIlS

i'a £é.,

Oeoo'er,Co/oicdo If/I 1/, 2002 2

19

Figure 7. - Deadwood Reservoir topographic map.
Sln000*

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

N

S

1 lam' lam'

i-al. I'

Detailed topography developed by

2002 areial and underwater data.

Vertical datum based on original

Project datum established by U.S.

Bureau of Peclamation that is

18.6 feet greater than the North

American Vertical Datum of 1988

Horizontal datum based on Idahos

State Plane Coordinate Sysytem,

West Zone (NAD83)

a

4,0000+

lIrnli7rny

a1i.

i2l:4Ly1l avii

DIm' irsivoii

LBAkW8Y [/iYaV/L141 OVAL

£2/FCKED BY

o-.,

Oeflver, CoIorQda AOL 1/,

_______ _________

21

Figure 8. - Deadwood Reservoir topographic map.

Location
Area-Capacity Curves for Deadwood Reservoir

Area (acre)

3,500 3,150 2,800 2,450 2,100 1,750 1,400 1,050 700

5,345.0

5,335.0

5,325.0

5,315.0

5,305.0

5,295.0

w

a)

5,285.0

0

5,275.0

5,265.0

5,255.0

5,245.0

5,235.0 - _______ _______ _______ _____ ______

5,225.0 ___________ _________

5,215.0

5,205.0 ______

I c n ________ _____________ __________________ _____

350 0

ii Ti i±iiI_II

Area

2002 Survey

Origina' Survey

_______ _______

_______________________ I iiiiiiiiiiiiiii r I ___________ ______________________

0 20000 40000 60000 80000 100000 120000 140000 160000 180000 200000

Capacity (acre-feet)

Figure 9. - 2002 area and capacity curves

5,345.0

5,335.0

5,325.0

5,315.0

5,305.0

5,295.0

5,285.0

5,275.0

5,265.0

5,255.0

5,245.0

5,235.0

5,225.0

5,215.0

5,205.0

5,195.0