# # U.S. Geological Survey, National Water Information System # Surface water measurements # # Retrieved: 2025-11-12 04:41:29 EST (sdww01) # # Further descriptions of the columns and codes used can be found at: # https://help.waterdata.usgs.gov/output-formats#streamflow_measurement_data # # Data for the following 1 site(s) are contained in this file # USGS 10263675 BIG ROCK C WASH A HWY 138 NR LLANO CA # ----------------------------------------------------------------------------------- # # agency_cd site_no measurement_nu measurement_dt tz_cd q_meas_used_fg party_nm site_visit_coll_agency_cd gage_height_va discharge_va measured_rating_diff gage_va_change gage_va_time control_type_cd discharge_cd 5s 15s 6s 19d 12s 1s 12s 5s 12s 12s 12s 7s 6s 21s 15s USGS 10263675 1 1988-12-12 12:30:00 PST Yes JA USGS 3.30 0.10 Good 0.00 0.10 Clear NONE USGS 10263675 2 1988-12-16 09:15:00 PST Yes JA USGS 3.60 2.59 Fair 0.01 0.40 Clear NONE USGS 10263675 3 1988-12-22 11:05:00 PST Yes JA USGS 3.67 4.32 Fair 0.00 0.40 Clear NONE USGS 10263675 4 1988-12-27 10:10:00 PST Yes JA USGS 3.63 3.47 Fair 0.06 0.40 IceCover NONE USGS 10263675 5 1989-02-16 12:40:00 PST Yes JA USGS 3.43 0.38 Fair 0.00 0.30 Clear NONE USGS 10263675 6 1989-02-27 16:40:00 PST Yes JA USGS 3.51 0.86 Fair -0.01 0.50 Clear NONE USGS 10263675 7 1991-03-01 09:17:00 PST Yes JA USGS 3.03 128 Poor 0.36 0.20 Clear NONE USGS 10263675 1W 1991-03-01 10:00:00 PST Yes JA USGS 5.60 106 Poor -0.06 0.20 Clear NONE USGS 10263675 8 1991-03-02 10:05:00 PST Yes JA USGS 2.22 11.9 Fair 0.00 0.50 Clear NONE USGS 10263675 9 1991-03-05 14:07:00 PST Yes JA USGS 2.18 10.2 Poor -0.01 0.40 Clear NONE USGS 10263675 10 1991-04-17 10:40:00 PDT Yes JA USGS 1.86 1.87 Fair 0.00 0.40 Clear NONE USGS 10263675 11 1991-04-18 13:05:00 PDT Yes JA USGS 1.90 2.08 Fair -0.01 0.50 Clear NONE USGS 10263675 12 1992-02-11 09:25:00 PST Yes JA USGS 4.38 298 Poor -0.13 0.40 Clear NONE USGS 10263675 2W 1992-02-11 11:20:00 PST Yes JA USGS 6.03 54.8 Poor -0.03 0.20 Clear NONE USGS 10263675 13 1992-02-12 09:30:00 PST Yes JA USGS 4.15 138 Poor 0.00 0.30 Clear NONE USGS 10263675 14 1992-02-13 09:45:00 PST Yes JA USGS 4.41 134 Poor 0.06 0.30 Clear NONE USGS 10263675 3W 1992-02-13 10:05:00 PST Yes JA USGS 7.89 40.5 Poor -0.05 0.20 Clear NONE USGS 10263675 4W 1992-02-18 17:00:00 PST Yes JA USGS 3.10 Fair Clear NONE USGS 10263675 15 1992-03-12 11:35:00 PST Yes JA USGS 10.8 Fair DebrisHeavy NONE USGS 10263675 5W 1992-03-12 12:10:00 PST Yes JA USGS 5.56 Fair DebrisHeavy NONE USGS 10263675 6W 1992-04-30 08:20:00 PDT Yes JCB USGS 5.42 49.9 Fair 0.00 0.30 DebrisHeavy NONE USGS 10263675 16 1992-04-30 14:30:00 PDT Yes JCB USGS 8.95 Poor DebrisHeavy NONE USGS 10263675 17 1992-05-12 15:30:00 PDT Yes JCB/JLO USGS 2.42 7.93 Fair DebrisHeavy NONE USGS 10263675 7W 1992-05-12 16:20:00 PDT Yes JCB/JLO USGS 5.60 32.4 Good DebrisHeavy NONE USGS 10263675 8W 1992-05-15 10:45:00 PDT Yes JCB/JLO USGS 5.50 33.9 Good 0.20 0.40 DebrisHeavy NONE USGS 10263675 18 1992-05-15 11:20:00 PDT Yes JCB/JLO USGS 2.52 8.46 Fair 0.00 0.20 DebrisHeavy NONE USGS 10263675 19 1992-06-11 09:00:00 PDT Yes JCB/JLO USGS 2.06 0.28 Fair 0.00 0.20 NONE USGS 10263675 9W 1992-06-11 09:20:00 PDT Yes JCB/JLO USGS 4.96 1.37 Fair 0.00 0.30 NONE USGS 10263675 10W 1992-06-17 12:35:00 PDT Yes MJD/JGH USGS 4.84 0.60 Fair NONE USGS 10263675 20W 1993-01-21 09:15:00 PST Yes ERH USGS 82.1 Poor Clear NONE USGS 10263675 21W 1993-03-11 13:55:00 PST Yes ERH USGS 52.4 Poor Clear NONE USGS 10263675 22 1993-03-17 10:30:00 PST Yes ERH USGS 61.1 Poor Clear NONE