Em4885 irrigation management practices to protect ground water
Em4885 irrigation management practices to protect ground water
Em4885 irrigation management practices to protect ground water
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2 CHAPTER<br />
Figure 2-7 summarizes results for lakes. Here, 13% of the <strong>to</strong>tal area was assessed<br />
and 27% of that area did not support beneficial uses. Another 5% was categorized as<br />
threatened. Figures 2-8 and 2-9 show the major causes impairing the use and the<br />
sources of contaminants in lakes.<br />
Not<br />
Assessed<br />
87%<br />
<br />
<br />
<br />
Percent of<br />
Total Acres<br />
Threatened<br />
5%<br />
<br />
Assessed<br />
13%<br />
Partially<br />
Supporting<br />
22%<br />
FIGURE 2-7. Percent of Acres Assessed and Summary of Overall Support for<br />
Designated Uses of Lakes<br />
FIGURE 2-8. Major Causes of Impairment for Lakes<br />
12<br />
Fully<br />
Supporting<br />
46%<br />
<br />
<br />
<br />
<br />
<br />
<br />
Major Causes of Impairm<br />
for Lakes<br />
11%<br />
8%<br />
6%<br />
4%<br />
Nutrients<br />
0 100<br />
Percent of Assessed Size<br />
Not<br />
Supportin<br />
27%<br />
Overall Support<br />
Designated Use<br />
Pesticide Contami<br />
Siltation<br />
Low Dissolved Oxy
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