Section IVSECTION IV
• IV. PROBLEMS AND CORRECTIVE ACTIONS •
Outlined below is an assessment of existing and potential water resource - related problems that
are known at this time. These problems have been identified based on an analysis of the land
and water resource data collected as part of this plan preparation and through information from
the City. A description of any existing or potential problems within the topic area has been listed
and future corrective actions have been incorporated into an implementation plan.
A. Lake and stream water quality problems
1. Impaired waters to which the City discharges and the currently approved impairments for
each are listed below:
• Lake Minnetonka: Mercury
• Christmas Lake: Mercury
• Lake Virginia: Mercury, Total Phesphorus Nutrients
• Lake Minnewashta (Located outside of the City): Mercury
Corrective Actions: The City shall work with the Minnehaha Creek Watershed District
to develop a Total Maximum Daily Load (TMDL) for the impaired waters within its
boundaries. Currently, the Total Maximum Daily Load (TMDL) requirement for mercury
is being developed at the state level. Once developed, the City will review the TMDL
and determine if additional policies are needed.
Additional information about the TMDL process can be found at
is I http://www.pca.state.mn.us/water/tmdI/index.htmI 0
2. The Minnehaha Creek Watershed District requires that the City provide an annual
reduction of 50 pounds of phosphorus for areas that drain to Lake Minnetonka from the
City of Shorewood. There are also requirements for an annual reduction of 4 pounds
and 3 pounds of phosphorus for areas that drain to Lake Virginia and Christmas Lake,
respectively.
Corrective Actions: The City will continue to work with developers to provide treatment
for areas as they redevelop. Since 2000, several storm water treatment ponds have
been constructed. These ponds will remove approximately 18 pounds of phosphorus
annually. The City's remaining allocation can be removed by adding a fall sweeping
operation in selected areas of the City.
3. Storm water pond maintenance for improved water quality treatment, flood control, and
aesthetics is needed at the following ponds:
• Manor Park Pond
Corrective Actions: The City, in cooperation with MCWD, will complete a feasibility
study to identify methods to improve this water body as funds are available.
• 0
City of Shorewood Section IV - Page 1
WSS Project No. 1459 -23
March 2008
SECTION IV
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B. Flooding and storm water rate control concerns
1. Drainage problems have been reported in the following areas:
• 22015 Stratford Place
• Lake South Auto
• Lake Mary
o 23980 Yellowstone Trail
0 23955 Clover Lane
0 23930 Yellowstone Trail
0 23950 Elder Turn
0 23905/23895 Elder Turn
• 6180 Murray Hill Road
• 5925 Grant Street
• 5915 Grant Street
• 23350 Academy Road
• 6180 Chaska Road
1�11
Corrective Actions: The City will work with the Minnehaha Creek Watershed District
and Riley /Purgatory/Bluff Creek Watershed District to manage flooding and rate control
concerns experienced within the City. The City will also complete hydraulic and
hydrologic analysis and feasibility reports for each of the flooding and drainage problem
• areas noted above and follow up as appropriate. The costs for these activities are •
outlined in the City's CIP, summarized in Table VI -1.
2. A number of landlocked subwatersheds are located within the City. These areas are
shown on Figure III -4.
Corrective Actions: Lake Mary currently threatens homes located on the east end of
the lake, near Clover Lane and Elder Turn. The City will complete a feasibility study for
constructing an outlet from this area.
There are areas identified as landlocked by MCWD that may not be landlocked. Of
particular note is the Minnetonka Country Club property. During the review of this area
as part of the 2005 Problem Area Study, an outlet from the golf course to Lake
Minnewashta was discovered. This outlet is believed to be deteriorated to the point that
its conveyance is limited. As needed, the City will work with the WD to determine if
outlets exist and what improvements, if any, are needed.
For other landlocked areas, the City will require redevelopment plans within these
subwatersheds to utilize strategies that minimize downstream flooding and additional
runoff volumes.
•
City of Shorewood
WSB Project No. 1459 -23
March 2008
Section IV - Page 2
•
SECTION IV
• C. Impacts of water quantity or quality management practices on recreational M
opportunities
1. The City has not experienced any impacts to recreational opportunities as the result of
water quantity or quality impacts.
Corrective Actions: No corrective action needed.
D. Impacts of storm water quality on fish and wildlife resources
1. The City recognizes that there is currently not enough water quality monitoring data
available to determine the effects of storm water quality on area lakes.
Corrective Actions: Consider implementing a water quality monitoring program in
cooperation with MCWD.
E. Impacts of erosion and sedimentation on water resources
1. Soil erosion and sediment transportation associated with new development may impact
the quality of water and storage volume available within City lakes, streams, and ditches.
Corrective Actions: Consider development and implementation of an erosion control
ordinance •
2. Erosion problems have been reported at the following locations:
Footprint Lake
Waterford Place drainage way
Corrective Actions: The City will monitor conditions of these areas and consider
maintenance and improvement options if needed.
3. The MCWD has requested that shoreline conditions on Christmas Lake, specifically the
eastern shore, be monitored and maintained. Shoreline restoration practices need to be
implemented to prevent erosion.
Corrective Actions: The City will undertake efforts to educate private property owners
and provide technical assistance to private property owners to identify maintenance and
improvement options if desired by Owners.
F. Impact of land use practices and development on water resource issues
1. The MCWD has identified several Key Conservation Areas. The areas are shown
below:
0 •
City of Shorewood Section IV - Page 3
WSB Project No. 1459 -23
March 2008
SECTION IV
•
•
PIN No.
ID No.
PIN No.
ID No.
053 - 2511723240029
30
053 - 3511723420025
5
053 - 2511723240030
30
053 - 3511723420026
5
053 - 2511723240083
30
053 - 3511723420027
5
053 - 2511723240085
30
053 - 3511723430001
5
053 - 2511723240086
30
053 - 3511723430002
5
053 - 301172314001
32
053 - 3511723430008
5
053 - 3111723340004
12
053 - 3511723430009
5
053 - 3111723340006
12
053 - 3511723430015
5
053 - 3111723340017
12
053 - 3511723440001
5
053 - 3111723340026
12
053 - 3511723440003
5
053 - 3111723340027
12
053 - 3511723440004
5
053 - 3111723340028
12
053 - 3511723440005
5
053 - 3111723410009
12
053 - 3511723440006
5
053 - 3111723430001
12
053 - 3511723440007
5
053 - 3111723430002
12
053 - 3611723220015
6
053 - 3111723430003
12
053 - 3611723220016
6
053 - 3111723430004
12
053 - 3611723220018
6
053 - 3111723430008
12
053 - 3611723220019
6
053 - 3111723440014
12
053 - 3611723220020
6
053- 3111723440017
12
053 - 3611723220021
6
053 - 3111723440024
12
053 - 3611723220022
6
053 - 3111723440025
12
053 - 3611723220023
6
053 - 3511723110015
6
053 - 3611723220024
6
053 - 3511723110048
6
053 - 3611723220029
6
053 - 3511723110049
6
053 - 3611723220030
6
053 - 3511723110072
6
053 - 3611723220031
6
053 - 3511723110074
6
053 - 3611723220032
6
053 - 3511723110083
6
053 - 3611723220033
6
053 - 3511723130020
5
053 - 3611723240004
4
053 - 3511723130025
5
053 - 3611723240006
4
053 - 3511723130025
5
053 - 3611723240007
4
053 - 3511723130028
5
053 - 3611723240008
4
053 - 3511723310003
5
053 - 3611723240009
4
053 - 3511723310006
5
053 - 3611723310001
4
053 - 3511723310027
5
053 - 3611723310002
4
053 - 3511723310028
5
053 - 3611723310005
4
053 - 3511723310032
5
053 - 3611723310010
4
053 - 3511723310033
5
053 - 3611723310011
4
053 - 3511723310034
5
053 - 3611723310016
4
053 - 3511723310035
5
053 - 3611723310019
4
053 - 3511723340017
5
053 - 3611723310020
4
053 - 3511723340021
5
053 - 3611723310023
4
053 - 3511723340022
5
053 - 3611723330001
4
053 - 3511723420004
5
053 - 3611723330003
4
053 - 3511723420007
5
053 - 3611723330004
4
053 - 3511723420008
5
053 - 3611723330006
4
053 - 3511723420016
5
053 - 3611723330007
4
053 - 3511723420017
5
053 - 3611723330009
4
053 - 3511723420018
5
053 - 3611723330010
4
053 - 3511723420022
5
053 - 3611723330013
4
053 - 3511723420023
5
053 - 3611723330014
4
053 - 3511723420024
5
053 - 3611723340018
4
PIN No.
ID No.
053 - 3511723110066
6
053 - 3511723110072
6
053 - 3511723110067
6
053 - 3511723110072
6
053 - 3511723110068
6
053 - 3511723110072
6
053 - 3511723110069
6
053 - 3511723110072
6
053 - 3511723110070
6
053 - 3511723110072
6
053 - 3511723110071
6
053 - 3511723110072
6
City of Shorewood
WSB Project No. 1459 -23
March 2008
Section IV - Page 4
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SECTION IV
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2. Corrective Actions: The City will work with MCWD to appropriately protect these areas
where possible. A small portion of upland area has been developed north of Lake
Virginia.
G. Adequacy of existing regulations to address adverse impacts on water resources
The City of Shorewood generally has adequate regulatory controls in place to manage
and mitigate adverse impacts on public waters and wetlands. However, additional
ordinances or ordinance updates are necessary to continue to have adequate regulatory
controls.
Corrective Actions: Continue to implement the Storm Water Pollution Prevention Plan.
The City of Shorewood will continue to implement Best Management Practices, review
and revise existing ordinances, as necessary, and develop new ordinances such as:
Erosion Control
Illicit Discharge
Storm Water Management
H. Identification of potential problems which are anticipated to occur in the next 20
years based on growth projections and planned urbanization.
1. The City is almost entirely developed; however, the City recognizes that increased
development in the future may increase the volume of runoff directed to the current
storm water storage and conveyance systems within the City.
2. The City anticipates the quality of storm water runoff generated from newly developing
areas will be treated prior to discharge from the City to areas of concern.
Corrective Actions: Implement the City of Shorewood Water Resource Management
Plan including rate control storm water treatment and infiltration requirements
consistent with MCWD rules If and when areas redevelop these controls will be
required based on the Goals and Policies of Section V
I. Availability and adequacy of existing technical information to manage water
resources.
1. The development of this Comprehensive Water Resource Management Plan has
provided additional technical information to the City related to storm water management.
Corrective Actions: The City will continue to update the hydrologic /hydraulic model
and GIS database as new development and redevelopment occur. This activity is
included in the City's Storm Water Pollution Prevention Plan as Minimum Control
Measure (MCM) 3- Illicit Discharge. Costs for implementing MCMs are included in
• Table VI -2. •
City of Shorewood Section IV - Page 5
WSB Project No. 1459 -23
March 2008
SECTION V
V. ESTABLISHMENT OF GOALS AND POLICIES
The City has developed a number of goals, strategies, and policies for the management of
storm water within the City. These goals and policies have been developed to complement any
county, regional, or state goals and policies. The goals of the City are as follows:
Goals
1. Minimize public capital expenditures needed to correct flooding and water quality
problems.
2. Identify and plan for means to effectively protect and improve surface and
groundwater quality.
3. Prevent erosion of soil into surface water systems.
4. Promote groundwater recharge.
5. Protect and enhance fish and wildlife habitat and water recreational facilities.
6. Secure the other benefits associated with the proper management of surface and
ground water.
In order to achieve the City's goals for managing storm water, four strategies were developed.
These strategies will assist the City in targeting its main audiences for the purposes of storm
• water management as follows: 0
Strategies
Cooperation with other agencies: This strategy recognizes that the City is not alone in
managing storm water within its boundaries. There are a number of other local, state,
and federal agencies that also have rules and regulations related to storm water
management. Through this strategy, the City has recognized these other agencies' role
in this endeavor and will cooperate and coordinate with these agencies as deemed
necessary by the City.
Education: This strategy includes educating various groups within the City about
proper storm water management. Education of residents, City Staff, City Council,
business owners, and developers is included in this strategy to assist in meeting the
City's goals.
Regulation: Much of storm water management comes in the form of regulations put on
new or redevelopment within the City. These regulations will also assist the City in
achieving their water management goals. Policies related to the management of storm
water are included in the regulation strategy.
Internal operations: The final strategy relates to the internal operations of the City. By
outlining policies related to how the City's operations will treat and manage storm water,
the City can work to achieve its storm water management goals.
• The City has identified target audiences for the policies outlined in each strategy. The •
target audiences and strategies are as follows:
City of Shorewood Section V — Page 1
WSB Project No. 1459 -23
March 2008