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These analyses indicate that water levels in the wetlands <br />are 2 to 5 feet lower than the Green River in the spring and are <br />either equal to or a few feet lower than the river through the <br />summer. Ground water elevation declines. this summer were similar <br />in magnitude and timing to those of the Green River. Thus, we <br />believe that a connection occurs. <br />The Green River is losing water to the east in portions of <br />the study area, and the wetlands are losing water to the west. <br />These two strong flows flush the area with relatively clean water <br />with no known problematic chemical compounds. The importance'of <br />these flows is discussed in the next section of the report. <br />If the Green River dike was not in place the deepest <br />portions of the wetlands, at station 3, would have been flooded <br />with up to 7 feet of water. In our studies at Moab we found that <br />water of this depth is sufficient to drown many emergent plant <br />species, such as cattails. Thus, removing the dike would allow <br />the area to flood with potentially very deep water. The high <br />sediment loads, cold and deep water could significantly reduce <br />the primary productivity of the existing wetlands, and could <br />aggrade this site considerably. <br />21 <br />