Lower Granite survey info_LLA-V-101-22X34.pdf
PDF 2 MB Posted
- Attached to
- LLA/LMA Stilling Basin Sediment Removal Federal contract opportunity
- Solicitation number
- W912EF24B0002
About this file
This document is a multibeam bathymetric survey report for the Lower Granite Stilling Basin on the Snake River in Oregon, Washington, and Idaho. The survey was conducted by David Evans and Associates, Inc. Marine Services Division on December 13, 2021. The report provides detailed contour maps and elevation data for the stilling basin area, including the spillway, trunnion bridge, and non-overflow sections. Key information includes: the horizontal datum is the Lower Granite Dam construction baseline, the vertical datum is the National Geodetic Vertical Datum of 1929, the water surface elevation ranged from 634.8 to 635.1 feet, and the minimum operating pool elevation is 633.0 feet. The survey was performed using a Teledyne RESON SEABAT T50P multibeam sonar system and Applanix POS/MV 320 positioning and motion reference system. The report certifies that the data was collected and processed under the direction of a registered professional land surveyor in the State of Washington.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Bid Abstract_W912EF24B0002.pdf | ||
| Site Visit Attendees W912EF24B0002_Redacted.pdf | ||
| LLA Stilling Basin Info_amd 0003_SITE-C-S3.pdf | ||
| W912EF24B0002 Amendment 0003.pdf | ||
| TECHSPECS_24B0002_amd0002_24Sep24.pdf | ||
| W912EF24B0002 Amendment 0002.pdf | ||
| Lower Monumental survey info_LMV-HP001.pdf | ||
| W912EF24B0002 Amendment 0001.pdf | ||
| Techspec_24B0002_30Jul24.pdf | ||
| 24B0002_Plans_V1.pdf | ||
| 24B0002_Plans_V2.pdf | ||
| W912EF24B0002 Solicitation.pdf |
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DATE AND TIME PLOTTED: 2/23/2022 C:\Users\eric.ramme\Desktop\2022-260-00 Dworshak-Lower Granite\MicroStation_LowerGranite\LLA-V-101.dgnDESIGN FILE:
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60'30'0'
(CBL)
CONSTRUCTION BASELINE
N
LOWER GRANITE STILLING BASIN
- AREA OF UNDERMINING
- SURVEY LIMITS
- MINOR CONTOUR
- MAJOR CONTOUR
- SPOT ELEVATION
+5 .4
LEGEND
S N
A K
R
IV
E R
F L
O W
NGVD-29(47) EL.: 652.87
E: 6743.92E: 2770734.50
N: 4871.55N: 500450.68
NAD-27 WASHINGTON SOUTH ZONE SPCS CONSTRUCTION BASE LINE
1.5" DIAMETER IRON PIPE WITH WASHER, STAMPED"86-20-1"
"86-20-1"
USED FOR SURVEY VESSEL CHECK POINT
POSITION CHECK MONUMENT
NGVD-29(47) EL.: 650.00'
E: 5144.97E: 2769039.60'
N: 4231.62N: 500755.26'
NAD-27 WASHINGTON SOUTH ZONE SPCS CONSTRUCTION BASE LINE
1.5" DIAMETER IRON PIPE WITH WASHER, STAMPED"86-20-4"
"86-20-4"
GPS BASE STATION
SURVEY CONTROL USED
ARE ACCURATELY DEPICTED.
DIRECTION AND THAT THE CONTOURS SHOWN HEREON
BATHYMETRIC SURVEY WAS PERFORMED UNDER MY
(REG NO. 48744), HEREBY CERTIFY THAT THIS
LAND SURVEYOR IN THE STATE OF WASHINGTON
I, GREGORY P. BAIRD, A REGISTERED PROFESSIONAL
SURVEYOR'S CERTIFICATION:
V-101
POSITION HEAVE, PITCH, ROLL AND HEADING MEASUREMENTS.
GNSS AND INERTIAL POSITIONING AND MOTION REFERENCE SYSTEM FOR
T50P MULTIBEAM SONAR, AN APPLANIX POS/MV 320 COMBINED KINEMATIC
10. BATHYMETRIC DATA WAS COLLECTED USING A TELEDYNE RESON SEABAT
KINEMATIC GNSS SYSTEM.
9. WATER SURFACE ELEVATIONS WERE OBTAINED FROM A REAL TIME
ELEVATION WAS 634.9 FEET. MINIMUM OPERATING POOL IS 633.00 FEET.
SURVEY FROM 634.8 FEET TO 635.1 FEET. THE MEAN WATER SURFACE
8. WATER SURFACE ELEVATION: WATER SURFACE VARIED DURING THE
ARE INDEXED EVERY 5TH CONTOUR.
BASIN AND 1.0 FEET OUTSIDE OF THE STILLING BASIN, MAJOR CONTOURS
7. CONTOURS ARE SHOWN AT AN INTERVAL OF 0.5 FEET IN THE STILLING
DISTANCE WEIGHTED ALGORITHM.
6. THE DATA WAS THINNED TO A 0.82 FOOT GRID, USING AN INVERSE
5. UNITS: U.S. SURVEY FEET.
THE 1947 ADJUSTMENT (NGVD-29(47)).
4. VERTICAL DATUM: NATIONAL GEODETIC VERTICAL DATUM OF 1929 WITH
(CBL)
3. HORIZONTAL DATUM: LOWER GRANITE DAM CONSTRUCTION BASE LINE
2. DATE OF SURVEY: DECEMBER 13, 2021.
SERVICES DIVISION (DEA).
SURVEY CONDUCTED BY DAVID EVANS AND ASSOCIATES, INC. MARINE
1. THIS DRAWING PRESENTS THE RESULTS OF A MULTIBEAM BATHYMETRIC
NOTES
X
GREGORY P. BAIRD, PLS, CH
NSPS - THSOA CERTIFIED HYDROGRAPHER (107)
JONATHAN L. DASLER, PE (OR), PLS (OR), CH
(NSPS - THSOA), CERTIFIED HYDROGRAPHER.
SOCIETY OF AMERICA
PROFESSIONAL SURVEYORS - THE HYDROGRAPHIC
UNDER THE DIRECTION OF A NATIONAL SOCIETY OF
THIS HYDROGRAPHIC SURVEY WAS COMPLETED
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| 2022-02-24T05:39:02-0800 | |
| Gregory Baird | |
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