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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
08158380 Little Walnut Creek at Georgian Drive, Austin, TX
LOCATION - Lat 30°21'15", long 97°41'52" referenced to North American Datum of 1927, Travis County, TX, Hydrologic Unit 12090205, on the left downstream side of the Georgian Drive bridge over Little Walnut Creek, 2,400 ft upstream of IH-35, and 6.0 miles north of the State Capitol Building.
DRAINAGE AREA - 5.22 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Feb. 1985 to May 1986 (daily discharges for select storm events), Feb. 2008 to current year.
GAGE -
Water-stage recorder. Satellite telemetry at station.
Datum of the gage: 637.324 ft NAVD88 based on a Level 2 Static GNSS survey processed through OPUS, Ref Frame NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2024.6550) and Geoid 18. The survey was completed on August 27th, 2024 while occupying a TRM referenced to local gage datum via differential levels.
Prior to 8/27/2024, the datum of the gage was 637.23 ft NGVD29 based on City of Austin BMs.
REMARKS - Records poor. No known regulation or diversions. No flow at times. Some records listed in the "Period of Record" for surface water may not be available electronically.
