5.6.1 Local Government Unit Subwatershed Phosphorus Load Reductions

Part of the phosphorus load reduction plan for Gleason Lake is a required reduction by the LGUs in the subwatershed of the phosphorus load contributed by existing land uses.  The 10 percent reduction in in-lake phosphorus for Hadley, Snyder, and Kreatz Lakes cannot occur without some reduction in subwatershed loading.  The requirement is a 15 percent reduction in loading from existing residential land use and 10 percent from other developed land use.  This reduction can be accomplished through: application of BMPs such as additional street sweeping, local water quality ponds, rain gardens and infiltration swales that reduce erosion or treat runoff; prevention of future load increases through the conservation of lands previously identified for development; or achieving load removals in excess of  the minimum required.  The LGUs identified below must identify in their local water management plans specific steps to accomplish these minimum reductions.  The LGUs must also annually report to the District their progress toward accomplishing this requirement.

Table 14.  Allocation of Gleason Lake subwatershed LGU phosphorus load reductions (lbs/yr).

Subwatershed Unit

Plymouth 

Wayzata

Orono

Total

Upstream of Gleason Lake

110

5

--

115

Upstream of Hadley Lake

26

--

--

26

Downstream of Gleason and Hadley Lakes

10

19

3

32

TOTAL

146

24

3

173