Description, qualifying comments, and acceptable water years.
Drainage area is 39009 sq.mi. (29% non-contributing) Datum is 402.27 ft.
Located in hydrologic unit 12090205 at Latitude: 30:14:40N Longitude: 097:41:39W
Station is in the state of TX (county code 453) and serviced by the TX office.
Channel slope is 3.47 feet/mile
Stream length is 587.00 miles
Mean basin elevation is 2022.00 feet above National Geodetic Vertical Datum
Percent of contributing drainage area covered by
Storage: 0.00% Lakes: N.A.% Forests: 54.00% Glaciers: N.A.%
Soil infiltration index is N.A. inches
Annual precipitation is 33.50 inches
Precipitation intensity is 3.40 inches/24 hour (expected on the average once each two years)
January minimum temperature is 34.00 degrees Fahrenheit
Comments and qualifications on the data:
Since 1937 at least 99% of drainage basin has been regulated by Lake Travis.
Daily and longer averages for 36 water years are acceptable (some whole years and all partial years are excluded).
A water year with acceptable data is indicated by an asterisk in the time line, which spans 1874 through 1988.
Water year
1 1 1 1 1 1 1 1 1 1 1 1 1
8 8 8 9 9 9 9 9 9 9 9 9 9
7 8 9 0 1 2 3 4 5 6 7 8 8
4-----0----5----0----5----0----5----0----5----0----5----0----5----0----5----0----5----0----5----0----5----0----5--8
.........................***************..*********************....................................................
The streamflow data
Daily values, monthly mean values, and yearly mean values
of streamflow data are available in tablular form.
Select the desired option from the list below.
a. Table of daily data (125K text)
b. Table of monthly data
c. Table of annual data
The data tables do not have column heading for ease of reading into statistical programs.
For a detailed description of the format of the data tables,
select the corresponding file from the list below.
a. Format of the daily data table
b. Format of the monthly data table
c. Format of the yearly data table