10-10-1994 Council Packet - Laserfiche WebLink

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I I I I \ \ \ The assimilative capacity of the narshes was determined using two rates. Permanent standing water has an assimilative capacity of 4 Ibs/acre/year. Permanent standing water was defined as areas of the marshes having cattails and other emergent vegetation. The dryer areas of the marsh, which have water in then only intermittently, absorb a greater amount of phos phorus and have an assimilative rate of 20/lbs/acre/year. C. Wetland and Marsh Requirements Table 2 presents the basic descriptive data for the marshes and wetlands within the study area. Informa tion regarding; marsh acreage, tributary acreage, soil types, etc. was essential for the estimation of_ acreage requirements for storage of storm water runoff and maintenance and enhancement of the water quality of the lakes within the study boundaries. After all the important narshes within the study area were identified (Figure 3), this information was com piled in tabular form. Table 2 presents the resulting information in an 11 column format as follows: 1. 5. 6. 7. 8. 9. Names of watersheds and code names for sub-water sheds (the sub-watersheds are shown on Figure 2 and the narshes are on Figure 3). 2, Acreage drained to the individual narshes, with totals for the drainage areas where necessary. 3. The acreage of permanent water in the snecified marshes and totals when necessary. 4. The acreage of intermittently flooded wetland and totals when necessary. The pollution assimilative capacity for each specific marsh with totals when necessary. The maximum residential density pollution potential for each specific drainage area with totals when necessary. The percentage of the marsh needed to assimilate the projected pollution in its drainage area. data). i The acre feet of storage available within the marsh.