Difference between revisions of "Water Quality Page"

• General
• GCMRC Monitoring Stations Map

[http://www.gcmrc.gov/discharge_qw_sediment/stations/GCDAMP GCMRC Maps and Spatial Data] [1]

Temperature

• USGS 09380000 COLORADO RIVER AT LEES FERRY, AZ

• USGS 09380000 COLORADO RIVER AT LEES FERRY, AZ

• USGS 09421500 COLORADO RV BLW HOOVER DAM, AZ-NV

Salinity

• Salinity Control ForumSalinity Program Overview
• USCODE-2011-title43-chap32A-1.pdf -The codified version of the Colorado River Basin Salinity Control Act as amended. It includes both Title I and Title II. It also includes footnotes and history of amendments.

2011 Water quality standards for salinity

[2]

• Station ---------------- Salinity in mg/L
  • Below Hoover Dam 723
  • Below Parker Dam 747
  • At Imperial Dam 879

• Glen Canyon Dam
• USBR TWG Meeting

Lake Mead

• NPS Lake water quality and limnology

• Nevada USGS

• NDEP Lake Mead Water Quality Forum (NDEP)

• HFE experiments on water quality (USGS)

• Lower Colorado River Studies (USGS)

• MONITORING HISTORY

1. Water-quality sampling in Lake Powell was initiated by the USBR in 1964 and continued through 1990.
2. Glen Canyon Environmental Studies conducted the monitoring from 1990-1996.
3. The USGS Water Resources Discipline conducted monitoring in Lake Powell on several dates in 1992, 1994, and 1995.
4. Since 1997, monitoring has been conducted by the USGS-GCMRC.

State of the Colorado River Ecosystem in Grand Canyon- USGS Circular 1282

• 'Additional Information

1. "Cold water temperatures: Cold water temperatures suppress important diseases, parasites, competitors, and predators of native fish."(pg26)

• Q: How could increases in salinity levels affect Lake Mead?

A: The associated costs might be felt from homeowners in the form of increases in corrosiveness to water fixtures/ pipes and more salt needed in the water softeners.

• Example of surface water pump concept to change temperatures (pg13)