Continuous slope-area (CSA) sensors are installed at three cross sections near Pima County Regional Flood Control District ALERT gage 4313 - Davidson Canyon Wash above I-10. The CSA reach was installed to measure medium to high flow events.
Continuous slope-area (CSA) sensors are installed at four cross sections downstream from Pima County Regional Flood Control District ALERT gage 2184 - Bear Canyon Wash near Bear Canyon Rd. The CSA reach was installed to measure medium to high flow events. The upstream end of the reach is located at 32.3052 N, 110.8018 W, approximately 200 feet downstream from the ALERT gage.
Discharge, stage, and surface velocity data collected at streamgage 09471580 at the SR 80 bridge over the San Pedro River at St David, AZ (data available via NWISWeb, see link below). Continuous slope-area (CSA) sensors collect stage data in two reaches downstream from streamgage 09471580. CSA 09471587 - Dragoon Wash above San Pedro River at St David, AZ, is instrumented with CSA sensors at three cross sections. CSA 09471588 - San Pedro River below Dragoon Wash at St David, AZ, is located downstream from the confluence of Dragoon Wash and the San Pedro River and is instrumented with CSA sensors at four cross sections.
A train derailment occurred in Marana, Arizona, on July 10, 2018. Runoff from a severe thunderstorm was flowing over the tracks at the time and may have contributed to the derailment. The USGS collected high-water marks for the flood event upstream from the derailment area.
Stage, discharge, and surface velocity data collected at streamgage 09486800 (data available via NWISWeb, see link below). Five continuous slope-area (CSA) sensors collect stage data in the reach upstream and downstream from the streamgage.
Continuous slope-area (CSA) sensors are installed at four cross sections downstream from Flume 11 operated by the Agricultural Research Service (ARS) at the Walnut Gulch Experimental Watershed. The CSA reach was installed to test the CSA method and determine channel roughness using the known discharge measured by Flume 11.
Stage data collected at streamgage 09501150 Fish Creek near Tortilla Flat, AZ (data available via NWISWeb, see link below). Eight continuous slope-area (CSA) sensors collect stage data in the reach downstream from the streamgage.
Stage and discharge data collected at streamgage 09484580 (data available via NWISWeb, see link below). Four continuous slope-area (CSA) sensors collect stage data in the reach upstream from the streamgage.
Peak streamflow data collected at crest-stage gage 09519750 Bender Wash near Gila Bend, AZ (data available via NWISWeb, see link below). Three continuous slope-area (CSA) sensors collect stage data in the gage reach.
Continuous slope-area (CSA) sensors are installed at four cross sections downstream from Flume 6 operated by the Agricultural Research Service (ARS) at the Walnut Gulch Experimental Watershed. The CSA reach was installed to test the CSA method and determine channel roughness using the known discharge measured by Flume 6. The upstream end of the reach is located at 31.7268 N, 110.0583 W, approximately 1,000 feet downstream from Flume 6.