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CATCHMENT PROFILE: RL-13 <br />Rice Lalze Subwatershed Assessment <br />PROJECT 2: Shenandoah Park <br />Project Site <br />Summary <br />Dominant Land Cover <br />Residential <br />TSS (lb/yr) <br />(Additional modeling <br />needed) <br />TP (lb/yr) <br />(Additional modeling <br />needed <br />Volume (acre-feet/yr) <br />(Additional modeling <br />needed) <br />Description: <br />The park is located immediately adjacent to <br />a drainage ditch that drains a large area of <br />residential properties to the south. The park <br />is divided into a public space and <br />playground area in its southern half, and <br />what appears to be a drained wetland in its <br />northern half, given the presence of hydric <br />soils (rapid assessment only) and persistent <br />vegetation cues. <br />Retrofit Options: <br />Restoration of the apparently drained <br />1N�E RL-' % <br />1 <br />RL-5 <br />RL-2 l <br />RL-3 <br />RL4 <br />RL-8 <br />RL-5 <br />RL-7 <br />Rice Lake <br />R <br />�,lyO RL.10 <br />RL-11 <br />RL-, 2 <br />r' <br />BIRCH ST <br />she, —do <br />� Nark <br />z <br />N� RL-13 <br />0 <br />s <br />wetland can provide several benefits <br />including water quality treatment, rate control, habitat values, potential wetland credit for <br />the city and public educational and aesthetic benefits. We envision a 3-celled wetland <br />complex, hydrologically connected to the ditch via 2 adjustable weirs (customized <br />floatable system) located along the existing ditch channel and with culverts between <br />cells. Recharge of the wetland will be achieved during medium -to -high ditch flow events <br />and evapotranspiration will drive drawdown. A secondary component of the design will <br />include the provision of effective public interfaces that convey information regarding <br />watershed ecology and human's place within it. This will include a circuit pathway, node <br />points for educational interaction and potentially a short section of boardwalk over open <br />water. <br />-41- <br />