Controlling Salt in the Colorado River Kib Jacobson Colorado River Basin Salinity Control Program Manager.

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Presentation transcript:

Controlling Salt in the Colorado River Kib Jacobson Colorado River Basin Salinity Control Program Manager

The Colorado River Basin 246,000 square miles Water for 35 million people More than 4 million acres irrigated

The Problem Historically, 9 million tons of salt passed Lees Ferry every year 47% occurs naturally 53% is human-caused

9 million tons of salt would require The Colorado River is 1,450 miles long a train of hopper cars about 1,000 miles long

COLORADO RIVER BASIN – Yellow outline Red: Upper Cretaceous salt –bearing formations Federal lands – Lt. Green Approx. 40% of Basin

Source Sectors

Grand Valley CO Saline Springs and Groundwater Discharges Natural Salt-Loading

Evaporation, Transpiration, and Erosion Price, UT

Natural Salt-Loading La Verkin Springs

Human-Caused Salt-Loading Irrigation Practices

Irrigation Sources

Human-Caused Salt-Loading Reservoir Operations Lake Powell

Crystal Geyser near Green River Utah Human-Caused Salt-Loading

Damages Sectors

Agricultural Damages Increases water use and operating & maintenance costs Lower yields and limits type of crop Crop Production

Municipal Damages Additional treatment required and reuse capability reduced Accelerates appliance and pipe deterioration

Industrial Damages Additional treatment required for high tech applications Accelerates pipe and machinery deterioration

Colorado River Basin States In cooperation with Reclamation Clean Water Act of 1972 Plan of Implementation Numeric Criteria Water quality standards that include:

The Numeric Criteria Based on 1972 salinity data Calculated as a Flow-weighted Average Annual Value Measured at three locations in the Lower Basin

Numeric Criteria Hoover mg/L Parker mg/L Imperial mg/L