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I I I I :1 11 I I :. ,I II I I ODiJG70 The CSUPAW model required the determination of several additional parameters of the potential recharge location. The hydrologic parameters required included the depth to the water table and aquifer thickness. Required parameters associated with the soil at the potential recharge location included transmissivity and specific yield. 4.3 Analysis of Possible Recharge Locations The use of the CSUPAW recharge model required an analysis of possible locations for basin implementation. Three wet meadow sites along the central Platte River; Elm Creek, Rowe Sanctuary, and Crane Meadows, were studied in depth by Wesche et. al. (1994) in the report titled Platte River Wetland Hvdroloov Study. The study examined the seasonal relationships between wet meadow groundwater elevations and river stage, precipitation, evapotranspiration, and adjacent irrigation. The three study site locations are illustrated in Figure 3. Grand Island * * ea * Lexington Central Platte . Elm Creek Site Crane Meadows Site Rowe Sanctuary S~e Figure 3: Location of Previous Study Sites along the Central Platte River )1 This report provided a significant source for obtaining the hydrologic parameters required by the model for the three existing wet meadow sites. In order to gain a better perspective of the topography and general structure of these wet meadows sites, a site visit was eonducted of the Mormon Island Crane Meadows wet meadow area south of Grand Island, Nebraska. The Crane Meadows site was characterized by large, flat grassy meadows adjacent to the wide, braided channel of the central Platte River. Both banks of the river were heavily wooded with a riparian forest of primarily cottonwood trees. The 'I I I I I 12