USGS Water-Year Summary 2022
05481950 Beaver Creek near Grimes, IA
LOCATION - Lat 41°41'18", long 93°44'05" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.35, T.80 N., R.25 W., Polk County, IA, Hydrologic Unit 07100004, on left bank 10 ft upstream from bridge on Northwest 70th Avenue in Johnston, 2.5 mi east of Grimes, 0.5 mi downstream from Little Beaver Creek, and 6.3 mi upstream from mouth.
DRAINAGE AREA - 358 mi².
- WDR IA-77-1: 1974(P). WDR IA-95-1: Location.
Revisions: Gage datum was updated to 806.55 ft NAVD88 on July 12, 2022, as determined by a GNSS Level II survey. Gage datum was previously published as 806.98 ft NGVD29 from levels.
PERIOD OF RECORD - Discharge records from April 1960 to current year.
Water-stage recorder. Datum of gage is 806.55 ft above North American Vertical Datum of 1988. Prior to August 31, 1966, non-recording gage at same site and datum.
PERIOD OF RECORD - Water years 2008, 2012.