Attachement 1.pdf
PDF 9 MB Posted
- Attached to
- DWA Weed Treatment
- Solicitation number
- W912EF26QA061
About this file
This document contains a series of maps depicting the Dworshak Dam & Reservoir recreation areas and weed treatment zones managed by the U.S. Army Corps of Engineers, Walla Walla District.
Map Page 1 provides an overview of the Dworshak Dam & Reservoir Recreation Areas, identifying seven usable boat ramps with their operational lake elevation ranges: Big Eddy (1600-1445 feet), Bruce's Eddy #1 (1600-1490 feet), Bruce's Eddy #2 (1600-1560 feet), Canyon Creek (1600-1560 feet), Dent Acres (1600-1485 feet), Freeman Creek (1600-1515 feet), and Grandad (1600-1530 feet). The map delineates USACE-managed lands, state campgrounds operated by the Idaho Department of Parks and Recreation, and recreation facilities including campgrounds, day-use areas, visitor centers, and trails across the approximately 65-mile reservoir system in north-central Idaho. Maps Pages 2 through 5 detail weed treatment zones with numbered treatment locations and road classifications (paved, dirt, and gravel surfaces). The treatment area maps cover the Dam Vicinity, North Grandad, and South Grandad regions, each displaying the Dworshak property boundary, watershed information, and road networks. All maps utilize 2015 NAIP imagery and coordinate systems referenced to Idaho State Plane Zone West with North American Datum of 1983, with dates current to March 11, 2026.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Attachement 3.pdf | ||
| Attachment 2.pdf | ||
| Solicitation - W912EF26QA061.pdf | ||
| Weed Treatment Application Performance Work Statement (PWS) 2026.docx | DOCX document |
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Text version
D
D
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D cO
FREEMAN CR RD
DENT
BRIDGE
RD
TWIN
RIDGE RD
LAKE
VIEW RD
GRANGEMONT RD
Dam View Camping Area
*Freeman Creek Campground and Boat Ramp
*Three Meadows Group Camp
Canyon Creek Campground and Boat Ramp
EUREKA
LOOP
CANYON
CR RD
Dent Acres Campground and Boat Ramp
Dent Acres Group CampDamascus Group Camp
Cold Springs Group Camp
DENT
BRIDGE
RD
Merrys Bay Trail
*Big Eddy Marina, Day Use Area and Boat Ramp
Merrys Bay Day Use Area
Visitor Center
Viewpoint
Bruces Eddy Day Use Area and Boat Ramps
Dworshak National Fish Hatchery
Cold Springs Trail
Dent Trail
Dent Bridge
3.5
Big Eddy Trail
4.7 4.8
5.0
7.27.3
8.1 8.2
11.0
12.1 12.2
12.4
13.4 13.5E0.1
E0.2 E0.6
Elk Creek Meadows OHV Trail System
Magnus Bay
E0.8 E0.9
E1.5
E2.3 E2.5
E3.2
E3.6
E3.8
14.1
14.5 15.0
E4.6 E4.5
C0.9
C0.6
C0.3
17.5 18.1
18.2 21.8
22.6
23.2
23.4
R1.3
R0.8
S0.7
28.4
30.5
26.0
8.6
8.5
8.4
WELLS
BENCH RD
Clearwater River
*Dworshak State Park
Canyon Creek Trail
JOHN
LEWIS
RD
MEADOW
CR RD
CAMP
Y RD
LOSETH RD
West Ridge Trail
MASON
BUTTE RD
8.3
Mile
Marker 19
Reeds Creek
Alder Creek
El k
Cr ee k
Sw am p Creek
Indian Creek
Elk Creek
Tie Creek
Freeman Creek
Dicks Creek
H odson
Creek
White Creek
North ForkClearwater River
Be nc h Cr ee k
Duffy Creek
SwampCreek
Bishop Creek
Cr an be rr y Cr ee k
Long Meadow
Creek
M cKinnon
Creek
Big Creek
N or th F or k
Cl ea rw at er R iv er
Co le
Cr ee k
Snake Creek
North ForkClearwater River
Ladds Creek
Ce da r Cr ee k
Caldwell Creek
Cold Creek
Elk C ree k
Canyon Creek
Ev an s Cr ee k
Nor th
Fo rk
Big Cr ee k
Grangemont
Orofino
Angel Butte
Bartlett Point
Buck Butte
Democrat Mountain
Huckleberry Butte
John Lewis Mountain
Riverview Point
Whiskey Butte
°4
0'
°3 5'
°3
0'
-116°-116°5'-116°10'-116°15'-116°20'-116°25'
Map Legend
Dworshak State Park
USACE Dworshak Lands
Nez Perce Reservation Boundary
USACE Campground
State Campground
Treatment Area 0 2 4 6 81
Miles To Missoula, MT
To Lewiston, ID
To Elk River
To Pierce, Weippe, Headquarters
To Kendrick
USABLE BOAT RAMP ELEVATIONS
Boat Ramp Big Eddy
Bruce's Eddy #1 Bruce's Eddy #2
Canyon Creek Dent Acres
Freeman Creek Grandad
Lake Elevation 1600-1445 1600-1490 1600-1560 1600-1560 1600-1485 1600-1515 1600-1530
Dworshak Dam & Reservoir Recreation Areas
* operated by the Idaho Dept of Parks and Recreation
BUILDING STRONG®
Ahsahka
Map Page 1
Little Meadow Creek ATV Camp
Grandad Campground & Boat Ramp
Grandad Bridge
36.2
37.3
39.8
L0.3
L3.6
37.3
44.1
45.0
45.1 45.9
47.3 47.4 48.8
49.1 50.0
Little Nort h Fork
Clearwat er R iver
Break fast Creek
Gold Creek
Long Creek
South Fork Robinson Creek
Day Creek
B entonCreek
LittleMea d ow Creek
St an t on Cr ee k
B u tte
Cr ee k
Weitas Creek
N orth Fork Benton Creek
North Fork RobinsonCreek
Silver Creek
Floodwood
Creek
Crampton Creek
RobinsonCreek
GyppoCreek Grandad Cre ek
Elkberry Creek
Telephone Creek
Elmb erryCreek
Lon g Ba rC ree k
Middle Fork RobinsonCreek
Ro on ey Cr eek
LoopCreek
La rki ns Cr e e k
McIntyre Creek
Croty Creek
Joes Creek
Canoe Creek
Boathouse Creek
Spir es
Cr ee k
115°45'W115°50'W115°55'W116°0'W116°5'W
°5
0'N
°4 5'N
Map Legend Roads Road Surface Type
Paved Surface
Dirt Surface
Gravel Surface
Dworshak Lands
Treatment Area
0 1 2 3 40.5 Miles
To Missoula, MT
To Orofino
To Moscow
USABLE BOAT RAMP ELEVATIONS
Boat Ramp
Big Eddy Bruce's Eddy #1 Bruce's Eddy #2
Canyon Creek Dent Acres
Freeman Creek Grandad
Lake Elevation 1600-1445 1600-1490 1600-1560 1600-1560 1600-1485 1600-1515 1600-1530
Dworshak Dam & Reservoir Recreation Areas
* operated by the Idaho Dept of Parks and Recreation
BUILDING STRONG®
Grandad Bridge Road
Map Page:2 ââ ââ ââ ââ ââ ââ
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WEST AHSAHKA
RIDGE RD
MERRYS BAY RD
Q RD
NORTHFORK DR
IDAHO P1
A RD
IDAHO 7
VIEWPOINT RD
LAKEVIEW RD
17 18
49 54
116°16'0"W116°17'0"W116°18'0"W116°19'0"W116°20'0"W
°3
2'0 "N
°3
2'0 "N
°3
1'3 0"N
°3
1'3 0"N
°3
1'0 "N
°3
1'0 "N
°3
0'3 0"N
°3
0'3 0"N
Map Legend Dworshak Boundary
Area Road Secondary Road Rural Road
Service Road Recreation Road ââ ââ ââ ââ ââ Abandoned Road
Watershed
0 0.75 1.50.375 Miles
DWORSHAK DAM & RESERVOIR
WEED TREATMENT MAP: DAM VICINITY
Disclaimer: All maps are provided on an "as is" basis with no warranties or guarantees as to the accuracy of the information provided therein.
The user assumes all responsibility for the use of any maps produced by the U.S. Army Corps of Engineers. The user also agrees to hold the U.S. Army Corps of Engineers and its employees harmless for any consequences derived from using maps produced by the U.S. Army Corps of Engineers. While all maps are believed accurate at the time of creation, actual conditions may vary.
Raster Data Source: 2015 NAIP CCM, Clearwater County, Idaho Vector Data Source: USACE Dworshak GIS Library Coordinates shown on map are in the Geographic Coordinate System (Latitude / Longitude) in degrees-minutes-seconds format.
Map Coordinate System: Idaho State Plane Zone: West Datum: North American Datum of 1983
MAP PAGE: 3
Date: 3/11/2026
MAP SCALE BAR
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GRANDAD
BRIDGE RD
BR
EA
KF
AS
T
CR
RD
115°53'0"W115°54'0"W115°55'0"W115°56'0"W115°57'0"W115°57'59.99"W
°5
1'0 "N
°5
1'0 "N
°5
0'3 0"N
°5
0'3 0"N
°5
0'0 "N
°5
0'0 "N
°4
9'3 0"N
°4
9'3 0"N
°4
9'0 "N
°4
9'0 "N
Map Legend Dworshak Boundary
Area Road Secondary Road Rural Road
Service Road Recreation Road ââ ââ ââ ââ ââ Abandoned Road
Watershed
0 0.75 1.50.375 Miles
DWORSHAK DAM & RESERVOIR
WEED TREATMENT MAP: NORTH GRANDAD
Disclaimer: All maps are provided on an "as is" basis with no warranties or guarantees as to the accuracy of the information provided therein.
The user assumes all responsibility for the use of any maps produced by the U.S. Army Corps of Engineers. The user also agrees to hold the U.S. Army Corps of Engineers and its employees harmless for any consequences derived from using maps produced by the U.S. Army Corps of Engineers. While all maps are believed accurate at the time of creation, actual conditions may vary.
Raster Data Source: 2015 NAIP CCM, Clearwater County, Idaho Vector Data Source: USACE Dworshak GIS Library Coordinates shown on map are in the Geographic Coordinate System (Latitude / Longitude) in degrees-minutes-seconds format.
Map Coordinate System: Idaho State Plane Zone: West Datum: North American Datum of 1983
MAP PAGE: 4
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GRANDAD CR
ARMSTRONG POINT RD
GRANDAD
BRIDGE RD
BE
NT
ON
CR
RD
GRANDAD
CR I RD
BR
EA
KF
AS
T
CR
RD
SILVER CR RD
GRANDAD
BRIDGE RD
115°52'0"W115°53'0"W115°54'0"W115°55'0"W115°56'0"W115°57'0"W
°5
0'0 "N
°5
0'0 "N
°4
9'3 0"N
°4
9'3 0"N
°4
9'0 "N
°4
9'0 "N
°4
8'3 0"N
°4
8'3 0"N
°4
8'0 "N
°4
8'0 "N
Map Legend Dworshak Boundary
Area Road Secondary Road Rural Road
Service Road Recreation Road ââ ââ ââ ââ ââ Abandoned Road
Watershed
0 0.75 1.50.375 Miles
DWORSHAK DAM & RESERVOIR
WEED TREATMENT MAP: SOUTH GRANDAD
Disclaimer: All maps are provided on an "as is" basis with no warranties or guarantees as to the accuracy of the information provided therein.
The user assumes all responsibility for the use of any maps produced by the U.S. Army Corps of Engineers. The user also agrees to hold the U.S. Army Corps of Engineers and its employees harmless for any consequences derived from using maps produced by the U.S. Army Corps of Engineers. While all maps are believed accurate at the time of creation, actual conditions may vary.
Raster Data Source: 2015 NAIP CCM, Clearwater County, Idaho Vector Data Source: USACE Dworshak GIS Library Coordinates shown on map are in the Geographic Coordinate System (Latitude / Longitude) in degrees-minutes-seconds format.
Map Coordinate System: Idaho State Plane Zone: West Datum: North American Datum of 1983
MAP PAGE: 5
| Area 1 Map.pdf |
| Map area 2.pdf |
| Attachment 1.pdf |
File details come from the government source that posted it. Updated .