Select the location:
- A-20 Reservoir (reservoir(s))
- Adams and Bunker Reservoir Number 1 (reservoir(s))
- Adams and Bunker Reservoir Number 2 (reservoir(s))
- Adams and Bunker Reservoir Number 3 (reservoir(s))
- Adena (city)
- Alden (city)
- Allison Reservoir (reservoir(s))
- Angel Lake (reservoir(s))
- Antelope Creek (stream)
- Antelope Reservoir (reservoir(s))
- Anthony Reservoir Number 2 (reservoir(s))
- Aristocrat Ranchettes (city)
- Arrowhead Reservoir (reservoir(s))
- Arsenal (city)
- Ashwood Reservoir (reservoir(s))
- Auburn (city)
- Ault (city)
- Aurora (populated place)
- B L Swift Reservoir (reservoir(s))
- Badger Creek (stream)
- Baldridge Lake (reservoir(s))
- Ballinger Reservoir (reservoir(s))
- Balzac (city)
- Banner Lake Number 1 Reservoir (reservoir(s))
- Banner Lake Number 3 Reservoir (reservoir(s))
- Banner Lake Number 5 Reservoir (reservoir(s))
- Banner Lakes (reservoir(s))
- Barnesville (city)
- Barr Lake (reservoir(s))
- Barr Lake (city)
- Baseline Reservoir (reservoir(s))
- Bass Reservoir (reservoir(s))
- Baxter Lake (reservoir(s))
- Beebe Seep Canal (canal)
- Beeman Ditch (canal)
- Behrens Reservoir (reservoir(s))
- Bennett (populated place)
- Berkley (populated place)
- Bidwell Lake (lake)
- Big Dry Creek (stream)
- Big Thompson River (stream)
- Bijou (city)
- Bijou Canal (canal)
- Bijou Creek (stream)
- Bijou Number 2 Reservoir (reservoir(s))
- Black Hollow Reservoir (reservoir(s))
- Block Hollow Creek (stream)
- Blue Sky (populated place)
- Boomerang Ditch (canal)
- Boot Lake Reservoir (reservoir(s))
- Boot Lake Reservoir (reservoir(s))
- Boulder Creek (stream)
- Bowles Reservoir Number 2 (reservoir(s))
- Bowles Reservoir Number 2 (reservoir(s))
- Bowles Reservoir Number One (reservoir(s))
- Bowles Seep Canal (canal)
- Box Elder Creek (stream)
- Box Elder Lateral (canal)
- Boyd Number 2 Reservoir (reservoir(s))
- Bracewell (city)
- Brainard Lake R-2 (reservoir(s))
- Bramkamp Reservoir (reservoir(s))
- Brantner Ditch (canal)
- Brewer Reservoir (reservoir(s))
- Briggsdale (city)
- Brighton (city)
- Brighton Ditch (canal)
- Brighton Lateral Ditch (canal)
- Bringleson Reservoir (reservoir(s))
- Briscoe Lake (reservoir(s))
- Brush (city)
- Brush Lateral (canal)
- Buck Creek (stream)
- Bucker Ditch (canal)
- Bull Canal (canal)
- Bull Ditch (canal)
- Bull Ditch (canal)
- Bull Seep (canal)
- Burger-Gault Lateral (canal)
- Burlington Ditch (canal)
- Cache la Poudre River (stream)
- Calhoun Reservoir (reservoir(s))
- Calkins Lake (reservoir(s))
- Camden (city)
- Camden Reservoir (reservoir(s))
- Camp Creek (stream)
- Canton (city)
- Carlin Reservoir (reservoir(s))
- Carr and Tyler Ditch (canal)
- Chestnut Reservoir (reservoir(s))
- Christensen Reservoir Number 1 (reservoir(s))
- Clark Lake (reservoir(s))
- Clear Creek (stream)
- Clennon Reservoir (reservoir(s))
- Cloverly (city)
- Coal Creek (stream)
- Coal Ridge Ditch (canal)
- Coal Ridge Waste Reservoir (reservoir(s))
- Coalbank Creek (stream)
- Cole Reservoir (reservoir(s))
- Cole Reservoir (reservoir(s))
- Colfer Sloughs (inlet)
- Collins Lateral (canal)
- Colorado Agricultural Canal (canal)
- Comanche (city)
- Comanche Creek (stream)
- Comer (city)
- Commerce City (populated place)
- Community Ditch (canal)
- Company Ditch (canal)
- Consolidated Law Ditch (canal)
- Copeland Lake (reservoir(s))
- Cornish (city)
- Cottonwood Creek (stream)
- Cottonwood Extension Ditch (canal)
- Cottonwood Lake (reservoir(s))
- Coursey Reservoir Number 1 (reservoir(s))
- Cow Creek (stream)
- Cozzens Lake (reservoir(s))
- Croke Lake (reservoir(s))
- Croke Reservoir (reservoir(s))
- Crom Lake (reservoir(s))
- Crow Creek (stream)
- D T Reservoir Number 3 (reservoir(s))
- Dacono (city)
- Darling Reservoir (reservoir(s))
- Davis Reservoir (reservoir(s))
- De France Reservoir (reservoir(s))
- De Remer Lakes (reservoir(s))
- Dearfield (city)
- Decker - Pierce Reservoir (reservoir(s))
- DeFrance Reservoir (reservoir(s))
- Denning Irrigation Reservoir Number 1 (reservoir(s))
- Dent (city)
- Denver-Hudson Canal (canal)
- Derby (populated place)
- Derby Lake (reservoir(s))
- Deremer Lake Number 10 (reservoir(s))
- Deuel and Snyder Canal (canal)
- Dewey Lake (reservoir(s))
- Dick (city)
- Dodd (city)
- Dougan Reservoir (reservoir(s))
- Dover (city)
- Dover Reservoir (reservoir(s))
- Drake Lake (reservoir(s))
- Dutch Girl Lake (lake)
- Eagle Rock Reservoir (reservoir(s))
- Eagle Rock Reservoir (reservoir(s))
- East Bijou Creek (stream)
- East Branch Highline Canal (canal)
- East Burlington Extension Ditch (canal)
- East Fork Little Muddy Creek (stream)
- East La Salle (city)
- East Lake Number 2 (reservoir(s))
- East Lost Creek (stream)
- East Prong Wildcat Creek (stream)
- East Speer Canal (canal)
- East Stoneham Reservoir (reservoir(s))
- East Webster Lake (reservoir(s))
- Eastlake Reservoir Number 2 (reservoir(s))
- Eastlake Reservoir Number 3 (reservoir(s))
- Eastlake Reservoir Number One (reservoir(s))
- Eastlake Reservoir Number Three (reservoir(s))
- Eastman Creek (stream)
- Eaton (city)
- Eaton and McClellan Ditch (canal)
- Eaton Ditch (canal)
- Eaton Ditch (canal)
- Eaton-Law Reservoir (reservoir(s))
- Eichheim Reservoir (reservoir(s))
- Emmerson Lake (lake)
- Empire Intake Canal (canal)
- Empire Reservoir (reservoir(s))
- Erickson Reservoir (reservoir(s))
- Eshelman Reservoir (reservoir(s))
- Evans (city)
- Evans Number 2 Ditch (canal)
- Evens Number 2 Ditch (canal)
- Evens Town Ditch (canal)
- Faber Reservoir (reservoir(s))
- Farmers (city)
- Farmers Extension Canal (canal)
- Farmers Highline Ditch (canal)
- Farmers Independent Ditch (canal)
- Federal Heights (populated place)
- Firestone (city)
- Firestone Lake (reservoir(s))
- First Creek (stream)
- Fisher Ditch (canal)
- Fort Lupton (city)
- Fort Morgan (city)
- Fort Morgan Canal (canal)
- Fosston (city)
- Foster Reservoir (reservoir(s))
- Franklin Lake (reservoir(s))
- Franklin Reservoir (reservoir(s))
- Frederick (city)
- Frederick Reservoir (reservoir(s))
- French Lake (reservoir(s))
- Fulton Ditch (canal)
- Fulton Extension Ditch (canal)
- Fulton Lateral Ditch (canal)
- Galeton (city)
- Gary (city)
- Gates (city)
- Geary Creek (stream)
- German Ditch (canal)
- German Reservoir Number 1 (reservoir(s))
- German Reservoir Number 12 (reservoir(s))
- Giffon Number 1 Reservoir (reservoir(s))
- Giffon Number 2 Reservoir (reservoir(s))
- Gilcrest (city)
- Gill (city)
- Gilmore Ditch (canal)
- Ginther Reservoir Number 1 (reservoir(s))
- Godding Dailey and Plumb Ditch (canal)
- Godfrey Ditch (canal)
- Good Lateral (canal)
- Goodrich (city)
- Goose Creek (stream)
- Gordon Lake (reservoir(s))
- Gowanda (city)
- Graham Seep (canal)
- Grapevine Ditch (canal)
- Greasewood Lake (lake)
- Greeley (city)
- Greeley Junction (city)
- Greeley Lake West Reservoir (reservoir(s))
- Greeley Number 3 Ditch (canal)
- Gress Reservoir (reservoir(s))
- Griffin (city)
- Grover (city)
- Gunn Reservoir Number Three (reservoir(s))
- H A Smith Reservoir (reservoir(s))
- Hackberry Reservoir (reservoir(s))
- Hambert (city)
- Hamilton Reservoir (reservoir(s))
- Hardin (city)
- Hartford Reservoir (reservoir(s))
- Hartley Reservoir (reservoir(s))
- Hazeltine (city)
- Hazeltine Heights (city)
- Heart Reservoir (reservoir(s))
- Henery Lake Reservoir (reservoir(s))
- Henry Reservoir (reservoir(s))
- Henrylyn Canal (canal)
- Higgins Lake (reservoir(s))
- Highland Lake (reservoir(s))
- Highland Reservoir Number 3 (reservoir(s))
- Highland South Side Ditch (canal)
- Highline Lateral (canal)
- Highline Lateral (canal)
- Hill Lake (lake)
- Hillrose (city)
- Hillsboro Reservoir (reservoir(s))
- Hoffman Creek (stream)
- Hogarty Reservoir (reservoir(s))
- Holt Reservoir (reservoir(s))
- Hoover Ditch (canal)
- Hopewell Ditch (canal)
- Horse Creek (stream)
- Horse Creek Reservoir (reservoir(s))
- Horsetail Creek (stream)
- Howard Creek (stream)
- Howard Reservoir (reservoir(s))
- Howards Lake (reservoir(s))
- Hoyt (city)
- Hudson (city)
- Hummel Reservoir (reservoir(s))
- Hunters Glen Lake (reservoir(s))
- Hurley (city)
- Hurrich (city)
- Idaho Creek (stream)
- Ide and Starbird Reservoir Number 1 (reservoir(s))
- Ide and Starbird Reservoir Number 2 (reservoir(s))
- Ide and Starboard Ditch (canal)
- Igo Creek (stream)
- Illinois Ditch (canal)
- Indian Creek Reservoir (reservoir(s))
- Ione (city)
- Ireland Number 5 Reservoir (reservoir(s))
- Ireland Reservoir Number 6 (reservoir(s))
- Ireland Reservoir Number Five (reservoir(s))
- Ireland Reservoir Number Four (reservoir(s))
- Ireland Reservoir Number One (reservoir(s))
- Isabel Myron Reservoir (reservoir(s))
- J B Cooke Reservoir (reservoir(s))
- Jack Rabbit Creek (stream)
- Jackpot Ditch (canal)
- Jackson Lake (reservoir(s))
- Jackson Lake (reservoir(s))
- Jackson Lake Inlet (canal)
- Jackson Lake Outlet (canal)
- Jackson Reservoir (reservoir(s))
- James Lake (reservoir(s))
- Jessum (city)
- Jim Creek (stream)
- Jim Number 1 Lateral (canal)
- Jim Number 2 Lateral (canal)
- John Law Ditch (canal)
- Johnson (city)
- Johnstown (populated place)
- Johnstown Reservoir (reservoir(s))
- Jones Ditch (canal)
- Kahler (city)
- Kalcevic Reservoir (reservoir(s))
- Kammerzell Lake (reservoir(s))
- Keen Lateral (canal)
- Keenesburg (city)
- Keota (city)
- Kerns (city)
- Kersey (city)
- Kershaw Ditch (canal)
- King Lake (reservoir(s))
- Kiowa Creek (stream)
- Klingenberg Flood Control Number 1 Reservoir (reservoir(s))
- Klug Lake (reservoir(s))
- Klug Reservoir Number 3 (reservoir(s))
- Koenig Reservoir (reservoir(s))
- Koleski Reservoir Number 1 (reservoir(s))
- Krauss (city)
- Kuner (city)
- La Salle (city)
- Lake Canal Reservoir Number 1 (reservoir(s))
- Lake Erie (reservoir(s))
- Lake Marie (reservoir(s))
- Lake Mary (reservoir(s))
- Lake Sangraco (reservoir(s))
- Lake Thomas (reservoir(s))
- Lakeside Lateral (canal)
- Lamb (city)
- Lamborn Reservoir Number 1 (reservoir(s))
- Lamborn Reservoir Number 2 (reservoir(s))
- Landora Lake (reservoir(s))
- Last Chance Ditch (canal)
- Latham Ditch (canal)
- Law Reservoir (reservoir(s))
- Law Reservoir (reservoir(s))
- Layton Lateral Ditch (canal)
- Leader (city)
- Lee Lake (reservoir(s))
- Lee Lateral (canal)
- Leemans Lake (reservoir(s))
- Lillie Reservoir (reservoir(s))
- Lindies Lakes (reservoir(s))
- Little Antelope Creek (stream)
- Little Comanche Creek (stream)
- Little Crow Creek (stream)
- Little Dry Creek (stream)
- Little Dry Creek (stream)
- Little Gem Reservoir (reservoir(s))
- Little Muddy Creek (stream)
- Little Owl Creek (stream)
- Little Sand Creek (stream)
- Little Simpson Creek (stream)
- Little Thompson Ditch (canal)
- Little Thompson Reservoir (reservoir(s))
- Lochbuie (city)
- Lodi (city)
- Log Lane Village (city)
- Logan Reservoir (reservoir(s))
- Loloff Reservoir (reservoir(s))
- Lone Tree (populated place)
- Lone Tree Creek (stream)
- Lone Tree Creek (stream)
- Lone Tree Ditch (canal)
- Lone Tree Ditch (canal)
- Long Lake (reservoir(s))
- Longs Lateral Ditch (canal)
- Loop Lake (reservoir(s))
- Loop Lake (reservoir(s))
- Lord Reservoir (reservoir(s))
- Lost Creek (stream)
- Lost Creek (stream)
- Lost Creek (stream)
- Lost Creek Reservoir Number 1 (reservoir(s))
- Lott Reservoir (reservoir(s))
- Lowe (city)
- Lower Clear Creek Canal (canal)
- Lower Latham Drain (canal)
- Lower Latham Outlet (canal)
- Lower Latham Reservoir (reservoir(s))
- Lower Platte and Beaver Canal (canal)
- Lowline Canal (canal)
- Lupton Bottom Ditch (canal)
- Lupton Bottoms Ditch (canal)
- Lutz Reservoir (reservoir(s))
- Magers Reservoir (reservoir(s))
- Mahood Reservoir (reservoir(s))
- Maloy (city)
- Marshall Reservoir (reservoir(s))
- Marshall Reservoir Number 2 (reservoir(s))
- Mason Reservoir (reservoir(s))
- Masters (city)
- Matthews (city)
- Mayham Lake (lake)
- McCann Ditch (canal)
- McFarland Pond (reservoir(s))
- McGrew Reservoir (reservoir(s))
- McGrew Reservoir (reservoir(s))
- McKay Lake (reservoir(s))
- McKay Reservoir (reservoir(s))
- Mead (city)
- Mead Lateral (canal)
- Mead Lateral (canal)
- Mead Reservoir (reservoir(s))
- Meadow Island Ditch Number 2 (canal)
- Medow Island Ditch Number 1 (canal)
- Meeks Reservoir Number 1 (reservoir(s))
- Meeks Reservoir Number 2 (reservoir(s))
- Messex (city)
- Metzger Reservoir (reservoir(s))
- Miantenoma Reservoir (reservoir(s))
- Mile High Lakes (reservoir(s))
- Miller Reservoir (reservoir(s))
- Milliken (city)
- Milton Lake Reservoir (reservoir(s))
- Milton Reservoir (reservoir(s))
- Miner Longan Ditch (canal)
- Minnie Reservoir (reservoir(s))
- Moeller Reservoir (reservoir(s))
- Monahan Lakes (reservoir(s))
- Moore (city)
- Moore Ditch (canal)
- Moore Reservoir Number 1 (reservoir(s))
- Moore Reservoir Number 4 (reservoir(s))
- Morgan Game and Fish Conservation Club Pond (reservoir(s))
- Morgan Heights (populated place)
- Mose Davis Lake (reservoir(s))
- Mose Davis Reservoir Number 2 (reservoir(s))
- Moseley (city)
- Muddy Creek (stream)
- Muir Ponds (reservoir(s))
- Mule Creek (stream)
- Mulligan Reservoir (reservoir(s))
- Munger Reservoir Number 1 (reservoir(s))
- Munger Reservoir Number 2 (reservoir(s))
- Murphy Reservoir (reservoir(s))
- Narrows (city)
- Neff Lake (lake)
- Neill Brothers Reservoir (reservoir(s))
- Neres Canal (canal)
- Neuman Lake (reservoir(s))
- New Raymer (city)
- Newell Lake (reservoir(s))
- Nile Ditch (canal)
- Nile Inlet (canal)
- Nile Reservoir (reservoir(s))
- Niver Canal (canal)
- North Boomerang Extension (canal)
- North Fork Geary Creek (stream)
- North Fork Ogilvy Ditch (canal)
- North Pawnee Creek (stream)
- North Washington (populated place)
- Northglenn (populated place)
- Northglenn Terminal Reservoir (reservoir(s))
- Nott Lake (reservoir(s))
- Nunn (city)
- O'Brian Canal (canal)
- Ogilvy Ditch (canal)
- Ohio Lake Reservoir (reservoir(s))
- Oklahoma Lake (reservoir(s))
- Oklahoma Reservoir (reservoir(s))
- Olds Reservoir (reservoir(s))
- Orchard (city)
- Owl Creek (stream)
- Owl Creek (stream)
- Owl Creek Ditch (canal)
- Owl Creek Reservoir (reservoir(s))
- Parmalee Reservoir (reservoir(s))
- Patterson Ditch (canal)
- Patton Spring Reservoir (reservoir(s))
- Pawnee Creek (stream)
- Pawnee Raw Water Reservoir (reservoir(s))
- Peckham (city)
- Petit Lateral (canal)
- Pierce (city)
- Pierce Lateral (canal)
- Platte Valley Ditch (canal)
- Platteville (city)
- Platteville Ditch (canal)
- Platteville Lateral (canal)
- Plumb Ditch (canal)
- Poision Springs Creek (stream)
- Poitz Reservoir (reservoir(s))
- Porter Creek (stream)
- Pot Creek (stream)
- Potty Brown Creek (stream)
- Prewitt Inlet Canal (canal)
- Prospect Lateral Ditch (canal)
- Prospect Lateral Sub Number 2 Ditch (canal)
- Prospect Reservoir (reservoir(s))
- Purcell (city)
- Putman Irrigation Ditch (canal)
- Raymer (populated place)
- Rehmer Lake (reservoir(s))
- Reid Ponds (reservoir(s))
- Reno Reservoir (reservoir(s))
- Reservoir C (reservoir(s))
- Reservoir D (reservoir(s))
- Reservoir E (reservoir(s))
- Richards Reservoir (reservoir(s))
- Riverside Ditch (canal)
- Riverside Intake Canal (canal)
- Riverside Reservoir (reservoir(s))
- Robinson Creek (stream)
- Rock Creek (stream)
- Rockwell Reservoir (reservoir(s))
- Roggen (city)
- Rosener Reservoir (reservoir(s))
- Roulard Lake (reservoir(s))
- Roulard Lateral (canal)
- Rowe Brothers Reservoir (reservoir(s))
- Rural Ditch (canal)
- Saddle Ridge (populated place)
- Saint Vrain Creek (stream)
- Sanborn Reservoir (reservoir(s))
- Sand Arroyo Creek (stream)
- Sand Creek (stream)
- Sand Creek (stream)
- Sand Creek (stream)
- Sand Creek (stream)
- Sand Creek Lateral (canal)
- Sand Reservoir Number 1 (reservoir(s))
- Sand Reservoir Number 2 (reservoir(s))
- Saxton Lake (reservoir(s))
- Schneider Lake (reservoir(s))
- Scout Island (island)
- Second Creek (stream)
- Seeley Lake (lake)
- Sequine Reservoir (reservoir(s))
- Seven Cross Ditch-Mapelli Filling Ditch (canal)
- Seven Reverse Y Number 1 Reservoir (reservoir(s))
- Seventy Holes Lake (lake)
- Severance (city)
- Shaw Reservoir (reservoir(s))
- Sheehan (city)
- Sherman Ranch Slough (stream)
- Sherrelwood (populated place)
- Signal Ditch (canal)
- Signal Reservoir Number 1 (reservoir(s))
- Signal Reservoir Number 2 (reservoir(s))
- Simpson Creek (stream)
- Simpsons Reservoir (reservoir(s))
- Skeel Reservoir Number 1 (reservoir(s))
- Sloan (city)
- Smith and Emmons Ditch (canal)
- Smith Irrigation Reservoir (reservoir(s))
- Smith Lake (lake)
- Smith Reservoir (reservoir(s))
- Smith Reservoir (reservoir(s))
- Snyder (city)
- Snyder Canal (canal)
- Snyder Reservoir (reservoir(s))
- South Branch Union Ditch (canal)
- South Fork Ogilvy Ditch (canal)
- Spear Canal (canal)
- Speer Canal (canal)
- Spomer Lakes (reservoir(s))
- Spotwood Creek (stream)
- Spring Creek (stream)
- Spring Lake (lake)
- Stanley Ditch (canal)
- Stanley Lateral Ditch (canal)
- Storm Reservoir (reservoir(s))
- Stouffer Reservoir Number 1 (reservoir(s))
- Stouffer Reservoir Number 2 (reservoir(s))
- Stouffer Reservoir Number 3 (reservoir(s))
- Stouffer Reservoir Number 4 (reservoir(s))
- Stouffer Reservoirs (reservoir(s))
- Strasburg (populated place)
- Stybr Reservoir Number 2 (reservoir(s))
- Sublette (city)
- Sunken Lake (lake)
- Sunny Acres Reservoir (reservoir(s))
- Swanson Lake (reservoir(s))
- Talbott Irrigation Reservoir (reservoir(s))
- Tampa (city)
- Tetsel Ditch (canal)
- The Slough (stream)
- Third Creek (stream)
- Thomas Lake Reservoir (reservoir(s))
- Thomas Reservoir (reservoir(s))
- Thompson and Platte Ditch (canal)
- Thompson Ditch (canal)
- Thompson Lake (reservoir(s))
- Thompson Reservoir (reservoir(s))
- Thornton (populated place)
- Todd Creek (populated place)
- Todd Creek (stream)
- Todd Reservoir (reservoir(s))
- Toedtli Reservoir (reservoir(s))
- Toll Gate Creek (stream)
- Tonville (city)
- Town Lateral (canal)
- Town of Mead Reservoir (reservoir(s))
- Tremont Canal (canal)
- Triangle Reservoir Number 1 (reservoir(s))
- Tuber (city)
- Tuck Lateral (canal)
- Twin Lakes (populated place)
- Twombly Reservoir (reservoir(s))
- Twomile Creek (stream)
- Uhl Reservoir (reservoir(s))
- Union (city)
- Union Ditch (canal)
- Union Ditch Extension (canal)
- Union Reservoir Ditch (canal)
- Upper Derby Lake (reservoir(s))
- Upper Platte and Beaver Canal (canal)
- Vaile Reservoir (reservoir(s))
- Vaile Reservoir (historical) (reservoir(s))
- Vallery (city)
- Vollmar (city)
- Wadley Reservoir Number 1 (reservoir(s))
- Wadley Reservoir Number 2 (reservoir(s))
- Wadley Reservoir Number 3 (reservoir(s))
- Waite Lake (reservoir(s))
- Walter Long Reservoir (reservoir(s))
- Wattenberg (city)
- Webster Lake (reservoir(s))
- Welby (populated place)
- Weldon Valley Ditch (canal)
- Weldona (city)
- Welty (city)
- West Burlington Extension Ditch (canal)
- West Fork San Arroyo Creek (stream)
- West Fork Willow Creek (stream)
- West Grapevine Ditch (canal)
- West Greeley (reservoir(s))
- West Neres Canal (canal)
- West Nile Reservoir (reservoir(s))
- West Sand Creek (stream)
- West Speer Canal (canal)
- Western Mutual Ditch (canal)
- Westminster (populated place)
- Wheeler Lake (lake)
- Whitney Ditch (canal)
- Whittington Reservoir (reservoir(s))
- Wiggins (city)
- Wild Horse Creek (stream)
- Wild Horse Ditch (canal)
- Wild Horse Reservoir (reservoir(s))
- Wildcat (city)
- Wildcat Creek (stream)
- Wildhorse Creek (stream)
- Wildhorse Reservoir 1 (reservoir(s))
- Willow Creek (stream)
- Willow Creek (stream)
- Windsor (city)
- Windsor Lake (lake)
- Windsor Reservoir (reservoir(s))
- Windsor Reservoir Outlet (canal)
- Woods Lake (reservoir(s))
- Work and Dragman Ditch (canal)
- Wykert Number 4 Reservoir (reservoir(s))
- Wykert Reservoir Number 1 (reservoir(s))
- Wykert Reservoir Number 2 (reservoir(s))