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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.
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USGS Water-Year Summary 2024
06907700 BLACKWATER RIVER AT VALLEY CITY, MO
LOCATION - Lat 38°52'12", long 93°37'19" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.13, T.47 N., R.25 W., Johnson County, MO, Hydrologic Unit 10300104, on left downstream end of bridge abutment county highway E, 0.5 mi upstream from Blackjack Creek, 0.5 mi northwest of Valley City, 1 mi downstream from Clear Creek, 8 mi northwest of Knob Noster, 9 mi northeast of Warrensburg.
DRAINAGE AREA - 547 mi².
REVISIONS HISTORY - Revisions: Gage datum was revised to 652.31 ft NAVD88 on June 14, 2022, as determined by a GNSS Level II survey. Gage datum was previously published in error June 12, 2007, to June 14, 2022, as 650.23 ft NGVD29 from levels.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct 1958 to Sep 1973, Jun 2007 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 652.31 ft. above North American Vertical Datum of 1988. Oct. 1958 to Sept 1973, at same site, datum 650.23 ft National Geodetic Vertical Datum of 1929.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.
