USGS Water-Year Summary 2019
06935830 CAULKS CREEK AT CHESTERFIELD, MO
LOCATION - Lat 38°39'16.7", long 90°35'41.8" referenced to North American Datum of 1983, in T.45 N., R.4 E., St. Louis County, MO, Hydrologic Unit 10300200, on upstream right side of wingwall of Highway CC bridge, 2.0 mi west of State Highway 340, 1.1 mi south of U.S. Route 40, and 1.09 mi upstream of Bonhomme Creek.
DRAINAGE AREA - 17.1 mi².
- WDR-US-2008: 1997-2007 (P).
PERIOD OF RECORD - Jul 1996 to current year. Annual peaks only for the 1972-1974 water years published in WRD MO 1974.
REVISED RECORDS - WDR-US-2008: 1997-2007 (P).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 453.98 ft above National Geodetic Vertical Datum of 1929. Prior to Jul 1996, at datum 450.00 ft above National Geodetic Vertical Datum of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr 11, 1979 reached a stage of 19.97 ft, former datum, discharge 7,940 ft³/s.