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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
06936530 SPANISH LAKE TRIBUTARY NEAR BLACK JACK, MO
LOCATION - Lat 38°47'52.7", long 90°12'51.3" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 NW 1/4 sec.22, T.47 N., R.7 E., St. Louis County, MO, Hydrologic Unit 10300200, on left downstream wingwall of Bellefontaine Ave. bridge, 2.14 mi north of Interstate 270, 0.65 mi east of Highway 367 (Lewis and Clark Blvd.), and 1.9 mi upstream of the Missouri River.
DRAINAGE AREA - 0.25 mi². Revised DA = 0.54 mi²
REVISIONS HISTORY - Revisions: Gage datum was updated to 502.10 ft NAVD88 on January 3, 2023, as determined by a GNSS Level II survey. Gage datum was previously published as 502.33 ft NGVD29 from levels.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Aug 1997 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 502.10 ft above North American Vertical Datum of 1988.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum peak flow of 6.36 ft. on Aug 12, 2019.
