5.6.1 Local Government Unit Subwatershed Phosphorus Load Reductions

Part of the phosphorus load reduction plans for various lakes is a required reduction by the LGUs in the subwatershed of phosphorus load contributed by existing land uses (see Table 14).  The requirement is a 15 percent reduction in loading from existing residential land use; 25 percent from existing agricultural 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, and agricultural BMPs that reduce erosion or treat runoff or drain tile discharge; 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 Lake Minnetonka subwatershed LGU phosphorus load reductions (lbs/yr).

LGU

Load Reduction(lbs)

Receiving Water

Minnetrista

44

Halsteds, Jennings, Priests, West Arm

Mound

41

Cooks, Harrisons, Jennings, Phelps, Priests, Seton, Spring Park, West Arm

Victoria

2

West Upper

Spring Park

4

Spring Park, Seton

Shorewood

50

Carsons, East Upper, South Lower, Spring, St. Albans, Tonka, West Upper

Orono

152

Browns, Carmens, Crystal, East Upper, Jennings Lafayette, Maxwell, North Arm, North Lower, South Lower, Spring Park, Stubbs, West Arm

Minnetonka Beach

13

Carmens, Crystal, Lafayette, North Lower, West Arm

Tonka Bay

16

East Upper, Lafayette, South Lower, Tonka,

Wayzata

36

Browns, Grays, Wayzata

Deephaven

19

Carsons, Robinson, South Lower

Woodland

10

North Lower, Wayzata

Minnetonka

8

Grays

Excelsior

10

South Lower, Tonka, St. Albans

Greenwood

5

South Lower, St. Albans

Chanhassen

3

South Lower

TOTAL

413