USGS Water-Year Summary 2020
03361000 BIG BLUE RIVER AT CARTHAGE, IN
- Lat 39°44'38", long 85°34'33" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.18, T.15 N., R.9 E., Rush County, IN, Hydrologic Unit 05120204,
on downstream side of CR W900N bridge, 0.5 mi northwest of Carthage, 2.2 mi downstream from Three Mile Creek, and at mile 50.7.
DRAINAGE AREA - 184 mi². drainage area derived from the "Drainage Areas of Indiana Streams" publication also known as the Hogget maps.
- WSP 2109: Drainage area.
PERIOD OF RECORD - October 1950 to March 2004 (discharge). October 2004 to current year (gage height only). Prior to October 1961, published as Blue River at Carthage.
GAGE - Water-stage recorder. Datum of gage is 859.33 ft above National Geodetic Vertical Datum of 1929. Prior to July 19, 1951, non-recording gage at site 300 ft downstream at same datum.
EXTREMES FOR PERIOD OF RECORD - (October 2004 to current year) maximum gage height, 11.96 ft, Dec. 22, 2013; minimum gage height, 0.21 ft, Sept. 3, 2019. (October 1950 to March 2004) maximum discharge, 12,900 ft³/s, Mar. 4, 1963; gage height, 14.62 ft.