Montana Water Rights
~355,061 water rights records
Points of Diversion & Use by County
Mapped diversion and place-of-use sites filed with the state engineer, via WaDE.
Lake County322,721 sites
Beaverhead County51,664 sites
Ravalli County48,022 sites
Phillips County38,962 sites
Gallatin County37,722 sites
Madison County37,392 sites
Missoula County34,027 sites
Flathead County33,134 sites
Lewis And Clark County32,561 sites
Valley County31,108 sites
Fergus County26,968 sites
Blaine County26,668 sites
Park County24,567 sites
Sanders County22,780 sites
Cascade County21,866 sites
Carter County21,657 sites
Powder River County20,930 sites
Yellowstone County19,244 sites
Powell County19,167 sites
Sweet Grass County18,360 sites
Showing top 20 of 60 counties
Top Water Right Holders
By permitted flow across the state's 500 largest rights.
Confederated Salish Kootenai Tribes699,240 CFS
Montana, State Of Dept Of Fish Wildlife Parks173,143 CFS
Avista Corporation91,400 CFS
Confederated Salish Kootenai Tribes, Montana, State Of Dept Of Fish Wildlife Parks73,027 CFS
Northwestern Corporation43,376 CFS
Northwestern Energy39,052 CFS
Flathead Joint Board Of Control27,534 CFS
Usa Dept Of Interior Bureau Of Reclamation23,494 CFS
Montana, State Of Dept Of Environmental Quality, Montana, State Of Dept Of Fish Wildlife Parks18,716 CFS
Usdi, Bureau Of Indian Affairs15,294 CFS
Montana, State Of Dept Of Environmental Quality15,005 CFS
David Y Watkins, Nicole E Watkins10,019 CFS
Montana, State Of Dept Of Natural Resources8,987 CFS
Usa Dept Of Agriculture Forest Service8,005 CFS
Cascade, Town Of5,613 CFS
Full Montana Water Rights Map
Interactive map with proximity analysis, priority date filters, and export.