controlling salt in the colorado river kib jacobson colorado river basin salinity control program...
TRANSCRIPT
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Controlling Salt
in the Colorado River
Kib JacobsonColorado River BasinSalinity Control Program Manager
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The Colorado River Basin
246,000 square miles
Water for 35 million people
More than 4 million acresirrigated
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The Problem
Historically, 9 million tons of salt
passed Lees Ferry every year
47% occurs naturally
53% is human-caused
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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
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COLORADO RIVER BASIN – Yellow outline
Red: Upper Cretaceous salt –bearing formations
Federal lands – Lt. Green
Approx. 40% of Basin
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Sources of Salinity
M&I4%
Reservoir12%
Irrigation37% Rangeland
BadlandsSpringsErosion
47%
Source Sectors
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Grand Valley CO
Saline Springs and Groundwater Discharges
Natural Salt-Loading
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Natural Salt-Loading
Evaporation, Transpiration,and Erosion
Price, UT
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Natural Salt-Loading
La Verkin Springs
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Human-Caused Salt-Loading
Irrigation Practices
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Irrigation Sources
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Human-Caused Salt-Loading
Reservoir Operations
Lake Powell
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Crystal Geyser near Green River Utah
Human-Caused Salt-Loading
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Damages Sectors
54%
27%
6%
3%4%
6%
2011 Quantified Economic Damages$290 Million/year
Agriculture - $157M
Households - $77M
Commercial - $17M
Utilities - $10M
Industrial - $12M
Other - $17M
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Agricultural Damages
Increases water use and operating & maintenance
costs
Lower yields and limits type of crop
Crop Production
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Municipal Damages
Additional treatment required
and reuse capability reduced
Accelerates appliance andpipe deterioration
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Industrial Damages
Additional treatment required
for high tech applications
Accelerates pipe andmachinery deterioration
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Colorado River Basin States
In cooperation with Reclamation
• Clean Water Act of 1972
• Plan of Implementation
• Numeric Criteria
• Water quality standards that include:
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The Numeric Criteria
• Based on 1972 salinity data
• Calculated as a Flow-weighted Average Annual Value
• Measured at three locations in the Lower Basin
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Numeric Criteria
Hoover - 723 mg/L
Parker - 747 mg/L
Imperial - 879 mg/L