Granite Reef Diversion, ID 75007

Three (3) Events - One (1) Winter &Two (2) Summer

No Useful Tropical Events in the Record

Gage Information

Extreme for Period of Record: 771 cfs on 03/07/2010 at 19:53 MST, 1.77 ft.

This gage responds to outflow from Spookhill FRS and

to local storms north and east of the Spookhill FRS gage.



Cross Section at Gage, Facing Downstream





Granite Reef Diversion, ID 75007, Event of Mar. 7, 2010; Winter Event

Granite Reef Diversion Hydrograph

Granite Reef Diversion Rain

Spookhill FRS Rain

Current Conditions Graphic





Granite Reef Diversion, ID 75007, Event of Aug. 12, 2022; Summer Event

Granite Reef Diversion Hydrograph

Granite Reef Diversion Rain

Spookhill FRS Rain

Thunder Mountain

Current Conditions Graphic





Granite Reef Diversion, ID 75007, Event of Jul. 10, 2008; Summer Event

Granite Reef Diversion Hydrograph

Granite Reef Diversion Rain

Spookhill FRS Rain

Current Conditions Graphic


Last Updated March 20, 2026