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Whitney
Drive Storm Water Improvements
Use Attainability
Analysis:
During 2001-2003, the Black Dog Watershed Management Organization conducted
a Use Attainability Analysis (UAA) for Crystal Lake/Keller Lake to study
water quality issues. The UAA included a water quality analysis for Crystal
Lake/Keller Lake and the watershed, including a review of historical water
quality data, intensive lake water quality monitoring, and computer simulations
of land use impacts on water quality.
As a result of the Crystal and Keller Lake Use Attainability Analysis
several potential improvements were identified within the watershed. These
improvements are intended to help reduce pollutant levels of the two lakes.
One of the eight primary improvements identified in the study is a project
to treat stormwater runoff from a large drainage area in Apple Valley
that currently is discharged directly into Keller Lake. More
information about the UAA can be found at >>>
Impaired Waters and
TMDL:
Reduction of pollutant levels in Keller Lake is important because the
lake is listed as an Impaired Water by the Minnesota Pollution Control
Agency. Due to this MPCA designation, a study of Total Maximum Daily Loads
(TMDL) for the lake is required. This study will in turn result in an
allocation of mandatory pollutant loading reduction to Keller Lake for
the City of Apple Valley. The Minnesota Pollution Control Agency website
is a good resource for information related to Impaired Waters designation
and Total Maximum Daily Loads process. Please
visit their website >>>
Apple Valley Drainage:
Apple Valley's watershed contribution to Keller Lake is comprised of approximately
800 acres. Of this area, nearly 600 acres contribute direct drainage to
the lake with no prior treatment. The majority of this flow (480 acres)
passes through a 66" diameter storm line that discharges directly
to Keller Lake within Keller Park. The City is in the process of studying
options to reduce loadings to Keller Lake. Because of this concentration
of flow, one option consists of constructing a stormwater treatment pond
within portions of Keller Park (in Apple Valley) and Lac Lavon Park (in
Burnsville). A map showing the drainage area to Keller Lake and the preliminary
draft layout of a potential pond is provided below.
Informational Meetings:
The City conducted an informational meeting on April 7, 2009 to present
an overview of the study process and solicit comments and input from the
public. Residents had several questions related to the potential construction
of a pond within park property. Staff is currently reviewing the comments
and concerns expressed at the meeting. Additional information will be
provided on this website section. A second informational meeting is also
anticipated in late May. Meeting notices will be distributed prior to
the meeting.
Project Manager: Jeff Kehrer, Natural Resources Coordinator
Contact: 952-953-2461
Whitney Drainage Area Map
UAA Synopsys
For more information, e-mail the Public
Works Department or call 952-953-2400
Content updated on:
01-Jun-2010
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