Technical Report

RiverEyes Observations for 2009

URL: https://webapps.usgs.gov/mrgescp/documents/Hatch_2009_RiverEyes-Observations-for-2009.pdf

Date: 2009/12/01

Author(s): Hatch M.D.

Publication: Report prepared for U.S. Bureau of Reclamation, 49 p.

Abstract:

Reconnaissance of portions of the Middle Rio Grande is mandated by the RPA Element C of the 2003 Biological Opinion, known as “RiverEyes.” RiverEyes monitoring must be performed when flows are less than 300 cfs at San Acacia. RiverEyes provides current information on river flows that allow action agencies to react quickly to rapidly changing conditions on the river, and facilitate coordination among the agencies to prevent unexpected drying, and prepare for silvery minnow rescues.

Hydrologic conditions in the Middle Rio Grande were systematically monitored from July 10 to October 31, 2009, to document spatial and temporal effects of low discharge flow regimes during periods when discharge was less than 300 cubic feet per second over San Acacia Diversion Dam. This activity is mandated by the RPA Element C of the 2003 Biological Opinion (USFWS 2003).