Basin and Bay Area Stakeholder Committee (BBASC)Wednesday, May 26, 2010

Lavaca-Navidad River Authority (LNRA) U. S. Geological Survey (USGS)

Larry B. ThomasUSGS – San Antonio, Tx. Program

Data Chieflbthomas@usgs.gov

08164000Lavaca Rv nr Edna, TX - Full Range Station, Gage-Height (Ght)/ Discharge (Q) Rating (r)

08164300Navidad Rv nr Hallettsville, TX - Full Range GHT / Q r

08164350Navidad Rv nr Speaks, TX - Full Range Ght

08164370Navidad Rv at Morales, TX - Full Range Ght

08164390Navidad Rv at Strane Pk nr Edna, TX - Full Range Ght / Q r

08164450Sandy Ck nr Ganado, TX - Full Range Ght / Q r

08164503W Mustang Ck nr Ganado, TX - Full Range Ght / Q r

08164504E Mustang Ck nr Louise, TX - Full Range Ght / Q r

08164525Lk Texana nr Edna, TX - Reservoir Elevation

08164000Lavaca Rv nr Edna, TX - Aug. 3, 1938 to present, 731 flow measurements, Max. Flow Recorded Oct. 19, 1994 Ght = 35.49 ft. 150,000 cfs .

08164300Navidad Rv nr Hallettsville, TX - Sept. 12, 1961 to present, 439 flow measurements,Drainage area: 332 square miles, minimum flow measured = 0.020 cfs Aug. 25, 2009

08164350Navidad Rv nr Speaks, TX - Flow Measurements, Sept. 1981 to Oct. 2000.

08164370Navidad Rv at Morales, TX - Flow Measurements, Aug. 1994 to Oct. 2000.

08164390Navidad Rv at Strane Pk nr Edna, TX - June 1996 to present,

08164450Sandy Ck nr Ganado, TX - Oct. 1977 to present,

08164503W Mustang Ck nr Ganado, TX - Oct. 1977 to present,

08164504E Mustang Ck nr Louise, TX - June 1996 to present,

http://waterdata.usgs.gov/tx/nwis/uv/?site_no=08164525&PARAmeter_cd=00065,00060,00062,72020,00054�

160 - SW stations 80 - RF stations 24 - GW stations 25 - QW

Following the May 15 rain events there were more than 21 flow measurements at 16 different

locations. These were made within portions of the Medina, Guadalupe, San Antonio, Lwr San

Antonio, Lavaca, Coleto, Nueces, Atascosa, and Coastal Water Sheds.

Continuous Data Collection and Processing of Surface Water / Ground Water / Water Quality and Rainfall

Sediment Data Collection Continuous Real Time Data Availability Hurricane / Storm Surge Monitoring Multidiscipline Science

Questions ?