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Wyoming Water Development Commission
Instream Flow Hydrologic Feasibilty Reports

Game and Fish Biological Assessment Reports

Bighorn/Nowood Basins

Biota, Bighorn and Nowood Basins Instream Flow Study Level I, Bighorn County, Wyoming, Dec-2015 (29,027 kb)

Arrow Land & Water, LLC, Bighorn Mountains Instream Flows Level I Study, Final Report, Soldier Creek Instream Flow Segment Temporary Filing Number 36 1/44, Buckskin Ed Creek Instream Flow Segment Temporary Filing Number 36 4/43, West Fork Little Bighorn River Instream Flow Segment Temporary Filing Number 36 3/43, Trout Creek Lower Instream Flow Segment Temporary Filing Number 36 2/44, Lodge Grass Creek Instream Flow Segment Temporary Filing Number 36 6/43, Cedar Creek Instream Flow Segment Temporary Filing Number 36 5/43 , Dec-2016 (63,636 kb)

Big Wind River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in the Big Wind River Instream Flow Segment No. 1 Temporary Filing No. 26 5/341, Sep-1992 (1,265 kb)

Clarks Fork Yellowstone River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in a Segment of the Clarks Fork Yellowstone River, Jan-1987 (1,455 kb)

Clear Creek

JFC Engineers Architects Surveyors, Report on the Instream Flow Feasibility for Clear Creek Segment #1, Clear Creek Segment #2, Final Report, Aug-2005 (24,410 kb)

Deer Creek Canyon

Alan R. Mauzy, Feasibility of Providing Deer Creek Instream Flows in Segment No. 1 Deer Creek Canyon Temporary Filing No. 27/3/185, Oct-1993 (10,873 kb)

Douglas Creek

Lidstone & Anderson, Inc. , Final Report on the Feasibility of Providing Instream Flows in the Douglas Creek Drainage, Jun-1993 (22,450 kb)

Dry Fork Tributary Little Big Horn Creek

JFC Engineers Architects Surveyors, Report on the Instream Flow Feasibility for Dry Fork Tributary of the Little Big Horn Creek Segment, Final Report, Oct-2004 (19,911 kb)

East Fork Smiths Fork Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in East Fork Smiths Fork Creek Instream Flow Segment No. 1 Temporary Filing No. 28 2/84, Nov-1994 (10,210 kb)

East Fork Wind River Tributaries

Arrow Land & Water, LLC, Final Reports on the Feasibility of Providing Instream Flows on East Fork Wind River Tributaries, Jun-2012 (64,330 kb)

Fish Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the Fish Creek Instream Flow Segment No. 1 Temporary Filing No. 27 2/186, Aug-1993 (8,687 kb)

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in Fish Creek Instream Flow Segment No. 1 and No. 2 Temporary Filing No. 28 4/158 and No. 28 5/158, Nov-1994 (9,248 kb)

Green River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in a Segment Number One of the Green River, Aug-1989 (1,474 kb)

JFC Engineers Architects Surveyors, Report on the Green River Tributaries #2 Instream Flow for Gilbert Creek Segment, Little Gilbert Creek Segment, Sage Creek Segment, Currant Creek Segment, Trout Creek Segment, Red Creek Segment, Final Report Book 1 of 2, Dec-2000 (18,595 kb)

JFC Engineers Architects Surveyors, Report on the Green River Tributaries #2 Instream Flow for Gilbert Creek Segment, Little Gilbert Creek Segment, Sage Creek Segment, Currant Creek Segment, Trout Creek Segment, Red Creek Segment, Final Report Book 2 of 2 (Maps, Exhibits, Appendices), Dec-2000 (112,126 kb)

Greybull River Tributaries

Rio Verde Engineering, Reports on the Feasibility of Providing Instream Flows on Greybull River Tributaries, Apr-2006 (10,562 kb)

Grey's River

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in Grey's River Instream Flow Segment No. 1 Temporary Filing No. 28 2/159, Oct-1994 (10,009 kb)

Greys-Hoback

Arrow Land & Water, LLC, Final Reports on the Feasibility of Providing Instream Flows on the Greys-Hoback Basin Area Tributaries, Nov-2013 (138,625 kb)

Ham's Fork

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in the Ham's Fork Instream Flow Segment No. 1 Temporary Filing No. 26 2/332, Mar-1999 (7,823 kb)

La Barge Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the La Barge Creek Instream Flow Segment No. 1 Temporary Filing No. 27 3/146, Aug-1993 (9,148 kb)

Laramie River

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the Laramie River Instream Flow Segment No. 1, Jun-1991 (7,999 kb)

Little Bighorn River

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the Little Bighorn River Flow Segment No. 1 Temporary Filing No. 26 5/339, Jul-1991 (9,145 kb)

Little Popo Agie River

Wyoming Water Development Office, Final Report on the Feasibility of Providing Instream Flow in the Little Popo Agie River Instream Flow Segment No. 1 Temporary Filing No. 28 3/159, Sep-1997 (2,746 kb)

Little Snake River

Aqua Terra Consultants, Inc., Final Report Little Snake River Instream Flow Study Project, Feb-1993 (34,900 kb)

Marquette Creek/Trout Creek

Lowham Engineering LLC, Marquette Creek and Trout Creek Instream Flow Level I Study, Marquette Creek Instream Flow TFN 33 5/275, Trout Creek Instream Flow TFN 33 6/275, Feb-2009 (18,800 kb)

Medicine Lodge Creek

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in the Medicine Lodge Creek Instream Flow Segment No. 1 Temporary Filing No. 27 2/146, Apr-1998 (7,501 kb)

Middle Fork Powder River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in a Segment of the Middle Fork Powder River, Jun-1987 (1,150 kb)

Middle Piney Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the Middle Piney Creek Instream Flow Segment No. 1 Temporary Filing No. 27 6/185, Aug-1993 (2,583 kb)

Muddy Creek Basin

Biota, Instream Flow Study Muddy Creek Basin Carbon County, Wyoming, Dec-2014 (12,343 kb)

New Fork River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in New Fork River Instream Flow Segment No. 1, Jan-1990 (1,468 kb)

North Cottonwood Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the North Cottonwood Creek Instream Flow Segment No. 1 Temporary Filing No. 26 4/388, Jul-1991 (2,632 kb)

North Piney Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the North Piney Creek Instream Flow Segment No. 1 Temporary Filing No. 27 5/185, Aug-1993 (2,524 kb)

North Platte River

Lidstone & Anderson, Inc. , Final Report on the Feasibility of Providing Instream Flows in the North Platte River , Jun-1993 (13,444 kb)

Pine Creek

Rio Verde Engineering, Reports on the Feasibility of Providing Instream Flows, Both Direct Flow and Secondary Storage in Pine Creek (at Pinedale), Direct Flow Instream Flow Filing No. 31 4/105, Nov-2002 (29,964 kb)

Rock Creek

Lowham Engineering LLC, Rock Creek Instream Flow Study, Rock Creek Instream Flow TFN 33 1/276, Nov-2007 (37,424 kb)

Arrow Land & Water, LLC, Final Report on Rock Creek and Trail Ridge Creek Instream Flows, Level I Study, Jun-2023 (25,036 kb)

Salt Creek/Thomas Fork

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flows in the Salt Creek/Thomas Fork Drainage for Water Canyon Segment, Giraffe Creek Segment, Coal Creek Segment, Raymond Creek Segment, Salt Creek Segment, Huff Creek Segment, Jan-1997 (19,581 kb)

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flows in the Salt Creek/Thomas Fork Drainage for Packstring Creek Segment, Little White Creek Segment Report 2, May-1998 (27,048 kb)

Salt River

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in Salt River Instream Flow Segment No. 1 Temporary Filing No. 28 3/80, Nov-1994 (11,861 kb)

Sand Creek

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow for Sand Creek, Feb-1989 (1,240 kb)

Savery Area

Western Water Consultants, Inc., Final Report of the Savery Area Instream Flow Study, Nov-1996 (6,325 kb)

Western Water Consultants, Inc., Final Report of the Savery Area Instream Flow Study Appendices, Nov-1996 (56,855 kb)

Wyoming Water Development Office, Savery Creek Instream Flow Feasibility Study, May-2017 (303 kb)

Shell Creek

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flow in Segments 1 and 2 of Shell Creek, Jul-1994 (15,772 kb)

Shoshone River

Wyoming Water Development Office, Shoshone River Instream Flow Hydrologic Study, Apr-2017 (4,382 kb)

Smiths Fork Drainage

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flows in the Smiths Fork Drainage for Smiths Fork Segment, Porcupine Creek Segment, Hobble Creek Segment, Coantag Creek Segment, Coal Creek Segment, Poker Hollow Creek Segment, Lander Creek Segment, Trespass Creek Segment, North Fork Smiths Fork River Segment , Jun-1998 (5,726 kb)

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flows in the Smiths Fork Drainage for Smiths Fork Segment, Porcupine Creek Segment, Hobble Creek Segment, Coantag Creek Segment, Coal Creek Segment, Poker Hollow Creek Segment, Lander Creek Segment, Trespass Creek Segment, North Fork Smiths Fork River Segment, Appendices, Jun-1998 (71,349 kb)

South Cottonwood Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the South Cottonwood Creek Instream Flow Segment No. 1 Temporary Filing No. 26 6/383, Aug-1992 (11,174 kb)

South Fork Grand Encampment River

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the South Fork Grand Encampment River Flow Segment No. 1 Temporary Filing No. 26 5/399, Jul-1991 (8,860 kb)

South Piney Creek

Western Water Consultants, Inc., Report on the Feasibility of Providing Instream Flow in the South Piney Creek Instream Flow Segment No. 1 Temporary Filing No. 27 1/186, Aug-1993 (2,559 kb)

Sunlight Basin

Biota, Sunlight Basin Instream Flow Study Level I, Park County, Wyoming, Apr-2019 (12,715 kb)

Sweetwater River

JFC Engineers Architects Surveyors, Report on the Feasibility of Providing Instream Flow in Segment 1 of the Sweetwater River, Jun-1994 (17,155 kb)

Tensleep Creek

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in Segment Number One of Tensleep Creek, Mar-1989 (1,428 kb)

Tongue River

Wyoming Water Development Office, Report on the Feasibility of Providing Instream Flow in Segment Number One of the Tongue River, Jan-1988 (1,198 kb)

Upper Wind River Basin

Biota, Upper Wind River Basin Instream Flow Study, Level I, Fremont County, Wyoming, Apr-2021 (5,703 kb)

Wagonhound Creek

JFC Engineers Architects Surveyors, Report on the Instream Flow Feasibility for Wagonhound Creek Segment, Final Report, Oct-2004 (21,358 kb)

Wood River Tributaries

Rio Verde Engineering, Reports on the Feasibility of Providing Instream Flows on Wood River Tributaries, Nov-2006 (25,120 kb)

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