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