Station list
05466000 EDWARDS RIVER NEAR ORION, IL
LOCATION.--Lat 41°16'20", long 90°22'40", in NE¼SE¼ sec.21, T.15 N., R.1 E., Henry County, Hydrologic Unit 07080104,
on left bank at downstream side of bridge on U.S. Highway 150, 1.5 mi north of Opheim, 5.5 mi south of Orion, and at mile 51.5.
PERIOD OF RECORD.--October 1940 to current year. Monthly discharge only for some periods, published in WSP 1308.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 653.96 ft above sea level (U.S. Army Corps of Engineers
bench mark). Prior to Apr. 4, 1941, and Apr. 8 to Nov. 11, 1981, nonrecording gage at same site and datum.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of August 1924 reached a stage of 20.2 ft, from floodmarks.