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<br />I <br /> <br />~ <br />I <br />I <br /> <br />storage available within Jones Lake to lower peak flood flows downstream in New Brighton. <br />As with most southem portions of the District, little development has occurred within this <br />subwatershed since the District was formed. <br /> <br />Subwatershed 15b: Pike Lake' <br /> <br />I <br />I <br /> <br />Policies: <br /> <br />A.3, B.1, B.2, B.3, B.4, B.5, C.1, C.2, C.3, C.4, C.5, D.1, D.2, E.l, E.2, E.3, <br />E.5, and F <br /> <br />. <br /> <br />This subwatershed contains Silver and Pike Lakes and drains an area of approximately 4.06 <br /> <br /> <br />sq mi. This subwatershed was addressed by the Pike Lake hydrology study and had <br /> <br /> <br />extensive stabilization measures performed along Ramsey County Ditch No.2 in an effort to <br /> <br /> <br />alleviate problems with excessive runoff rate associated with development which occurred <br /> <br />prior to District formation. Silver Lake is a current concern of the District and is the subject <br /> <br /> <br />of joint efforts by the Cities of New Brighton, St. Anthony, Columbia Heights, and Ramsey <br /> <br /> <br />County to improve the watershed draining to the lake. The lake is subject to level <br /> <br /> <br />fluctuations which provides significant storage within this subwatershed. Preservation of <br /> <br /> <br />lesser storage areas has been encouraged by the City of New Brighton's Comprehensive <br /> <br />Stormwater Plan which has described numerous ponding areas to be preserved in the city. <br /> <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />District modeling efforts for this subwatershed tend to overestimate peak flow as these <br /> <br /> <br />numerous small retention ponds and their cumulative storage cannot be accommodated in <br /> <br />the large-scale modeling efforts undertaken by the District. <br /> <br />I <br />I <br /> <br />Subwatershed 16: Lower Rice Creek <br /> <br />I <br />I <br />I <br /> <br />Policies: <br /> <br />A.3, B.l, B.2, B-3, B.4, B.5, C.1, C.2, C.3, C.4, C.5, D.1, D.2, E.l, E.2, E-3, <br />E.4, E.5, and F <br /> <br />~ <br /> <br />Little additional development is anticipated in this 7.35 sq mi area. The dominant <br />hydrologic feature is Long Lake which accepts flow from the three sectors of the watershed <br />and provides a single outlet for Rice Creek. After the flows converge at Long Lake, Rice <br />Creek provides a single drainage route down the relatively steeply sloped Rice Creek channel <br />to the Mississippi River. <br /> <br />I <br /> <br />4-25 <br /> <br />10/97 <br />