3.1 Water Quality
- Painter Creek has total phosphorus and
TSS concentrations that exceed the MPCA’s ecoregion guidelines. Phosphorus
loads in Painter Creek increase upstream to downstream, and dissolved
oxygen can fall below the state standard during low flows. Based on District monitoring data, it is
estimated that Painter Creek contributes between one-third and one-half
the total annual phosphorus load delivered to Jennings Bay,
although its subwatershed comprises only 21 percent of the contributing
area. Improving Jennings Bay
is dependant on reducing phosphorus load from Painter Creek.
- The Painter Creek Feasibility Study identified a number of potential
BMPs including wetland restorations and small-event creek diversions
intended to spread flow out into wetlands and floodplains to allow natural
vegetative and soil processes to reduce phosphorus loads.
- The HHPLS did not identify specific
phosphorus load reductions for the Painter Creek subwatershed, but
identified BMPs that could be considered such as enlarging or dredging
existing treatment ponds.
- Rough fish in Katrina Lake
and the creek and wetlands likely contribute to internal loading from
- Development, redevelopment, and
reconstruction in the subwatershed will increase nutrient and TSS loads
from the watershed as well as increasing the volume of stormwater runoff.