USGS Water-Year Summary 2022
13210986 W HARTLEY GULCH NR CALDWELL ID
LOCATION - Lat 43°41'58.58", long 116°41'08.5" referenced to North American Datum of 1983, Canyon County, ID, Hydrologic Unit 17050114, Caldwell Quad., SE 1/4 SE 1/4 NW 1/4 sec.10, T.4 N., R.3 W. on right bank approximately 25 ft upstream from River Road bridge/culvert.
DRAINAGE AREA - 26.8 mi².
PERIOD OF RECORD - December 2016 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage datum is arbitrary. Nov. 29, 2016 to Dec. 20, 2017, at site approx. 18 ft downstream on left bank at same datum.
COOPERATION - Station operated in cooperation with the State of Idaho Water District No. 63 and the Idaho Department of Water Resources (IDWR).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 49.1 ft³/s, May 20, 2020, gage height, 3.02 ft; maximum gage height, 3.29 ft, June 13, 2017, (backwater from the Boise River); minimum discharge, 3.10 ft³/s, Mar. 28, 2020, gage height 0.83 ft, minimum gage height is 0.76 ft Mar. 15, 2019.