chanhassen’s 2006 surface water management plan carver county wenr meeting march 27, 2007 lori...
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Chanhassen’s Chanhassen’s 2006 Surface Water 2006 Surface Water Management Plan Management Plan
Carver County WENR MeetingCarver County WENR MeetingMarch 27, 2007March 27, 2007
Lori Haak
Water Resources Coordinator
952.227.1135
OverviewOverview Chanhassen at a GlanceChanhassen at a Glance Review of ProcessReview of Process ProductsProducts OutcomesOutcomes Work PlanWork Plan ToolsTools ChallengesChallenges QuestionsQuestions
Chanhassen at a GlanceChanhassen at a Glance
Why Update?Why Update? Compliance Compliance
Metropolitan Surface Water Management Metropolitan Surface Water Management Act Act
National Pollutant Discharge Elimination National Pollutant Discharge Elimination System ProgramSystem Program
WMO PlansWMO Plans Improve accuracy & efficiencyImprove accuracy & efficiency
InfrastructureInfrastructure Goals & PoliciesGoals & Policies Development StandardsDevelopment Standards
SWMP Update ProcessSWMP Update Process
Update of Water Quantity ModelUpdate of Water Quantity Model Lake Management StrategiesLake Management Strategies Public Input & InvolvementPublic Input & Involvement
Public hearingsPublic hearings 7 Task Force meetings7 Task Force meetings Technical subcommitteeTechnical subcommittee
Funding RevisionsFunding Revisions City Code UpdateCity Code Update
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies
GoalsGoals11 Water QuantityWater Quantity To provide at least 100-year flood protectionTo provide at least 100-year flood protection
for all persons & structures.for all persons & structures.
22 Water QualityWater Quality To achieve water quality standards in lakes, streams, & To achieve water quality standards in lakes, streams, & wetlands consistent with designated use & wetlands consistent with designated use & established classifications.established classifications.
33 WetlandsWetlands To protect & rehabilitate wetlands to maintain orTo protect & rehabilitate wetlands to maintain orimprove their function & value.improve their function & value.
44 Erosion & Erosion & Sediment ControlSediment Control
Minimize soil erosion & sedimentation.Minimize soil erosion & sedimentation.
55 FinancingFinancing Establish & maintain funding sources.Establish & maintain funding sources.
66 RegulatoryRegulatoryResponsibilitiesResponsibilities
Maintain primary responsibility for managing water Maintain primary responsibility for managing water resources at the local level, but continue coordination & resources at the local level, but continue coordination & cooperation with other agencies & organizations.cooperation with other agencies & organizations.
77 PublicPublicEducationEducation& Information& Information
Provide information & educational resources to Provide information & educational resources to improve knowledge & promote active public role inimprove knowledge & promote active public role inresource management.resource management.
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies Water Resource Classification SystemWater Resource Classification System
Water Resource ClassificationWater Resource Classification
ManagementManagementClassClass
ManagementManagementStrategyStrategy
StormwaterStormwaterTreatmentTreatment
Water Water ResourceResource
UseUseDesignationDesignation
PreservePreserve Preserve & improve, Preserve & improve, impose highest impose highest standardsstandards..
NURP plus NURP plus Enhanced Enhanced TreatmentTreatment
Seminary FenSeminary Fen Calcareous FenCalcareous Fen
Assumption CreekAssumption Creek Trout StreamTrout Stream
Improve - 1Improve - 1 Goal to improveGoal to improve trends,trends, impose higher impose higherstandards. standards. TheseThesewaters are “impaired.”waters are “impaired.”
NURP plus NURP plus Enhanced Enhanced TreatmentTreatment
Lotus LakeLotus Lake Rec. DevelopmentRec. Development
Lake RileyLake Riley Rec. DevelopmentRec. Development
Bluff CreekBluff Creek Natural StreamNatural Stream
Riley CreekRiley Creek Natural StreamNatural Stream
Improve - 2Improve - 2 Goal to maintain orGoal to maintain orimprove. Look forimprove. Look foropportunities to applyopportunities to applyhigher standardshigher standards..
NURP plusNURP plusEnhanced Enhanced Treatment, if Treatment, if FeasibleFeasible
Lake AnnLake Ann Rec. DevelopmentRec. Development
Christmas LakeChristmas Lake Rec. DevelopmentRec. Development
Lake MinnewashtaLake Minnewashta Rec. DevelopmentRec. Development
ManageManage Goal to maintain waterGoal to maintain waterquality & keep long-quality & keep long-term trends stable to term trends stable to ImprovingImproving
NURPNURP Harrison LakeHarrison Lake Natural EnvironmentNatural Environment
Lake LucyLake Lucy Rec. DevelopmentRec. Development
Rice Marsh LakeRice Marsh Lake Natural EnvironmentNatural Environment
Silver LakeSilver Lake Natural EnvironmentNatural Environment
Lake SusanLake Susan Rec. DevelopmentRec. Development
Lake St. JoeLake St. Joe Natural EnvironmentNatural Environment
UtilizeUtilize N/AN/A N/AN/A Storm Water PondsStorm Water Ponds Treatment SystemTreatment System
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies Water Resource Classification SystemWater Resource Classification System Stormwater System InventoryStormwater System Inventory
Stormwater System InventoryStormwater System Inventory
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies Water Resource Classification SystemWater Resource Classification System Stormwater System InventoryStormwater System Inventory Hydrologic Model UpdateHydrologic Model Update
Hydrologic Model UpdateHydrologic Model Update
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies Water Resource Classification SystemWater Resource Classification System Stormwater System InventoryStormwater System Inventory Hydrologic Model UpdateHydrologic Model Update Wetland Inventory, Assessment & PlanWetland Inventory, Assessment & Plan
Wetland InventoryWetland Inventory
New & Refined ToolsNew & Refined Tools
Goals & PoliciesGoals & Policies Water Resource Classification SystemWater Resource Classification System Stormwater System InventoryStormwater System Inventory Hydrologic Model UpdateHydrologic Model Update Wetland Inventory, Assessment & PlanWetland Inventory, Assessment & Plan Water Body Evaluation UpdateWater Body Evaluation Update Standards (in progress)Standards (in progress)
OutcomesOutcomes Work Plan PrioritizationWork Plan Prioritization
Physical system improvement needsPhysical system improvement needs NPDES Permit complianceNPDES Permit compliance Ordinance updatesOrdinance updates Budgeting/Financing the programBudgeting/Financing the program
Efficient & Effective Delivery Efficient & Effective Delivery Development reviewsDevelopment reviews Taking advantage of higher return Taking advantage of higher return
opportunitiesopportunities
Work Plan Work Plan Water QuantityWater Quantity
Reduce impact of high water levels on Reduce impact of high water levels on Lotus LakeLotus Lake
Review easements & emergency Review easements & emergency overflowsoverflows
Reduce flows in Bluff Creek Reduce flows in Bluff Creek Water QualityWater Quality
Protect Seminary Fen; Assumption CreekProtect Seminary Fen; Assumption Creek Improve Lotus & Riley Lakes; Bluff & Riley Improve Lotus & Riley Lakes; Bluff & Riley
CreeksCreeks Maintain other water bodies/steady trendsMaintain other water bodies/steady trends Inspections & maintenanceInspections & maintenance
Work PlanWork Plan WetlandsWetlands
Buffers & setbacksBuffers & setbacks Use MnRAM data to guide decisions Use MnRAM data to guide decisions
Erosion & Sediment ControlErosion & Sediment Control Development review Development review Construction site inspection Construction site inspection →→ CSWCD CSWCD Restore & stabilize scours Restore & stabilize scours
Finance & Regulatory ResponsibilitiesFinance & Regulatory Responsibilities Maintain adequate fundingMaintain adequate funding Remain primary permitting authorityRemain primary permitting authority
Surface Water Management PlanSurface Water Management Plan
Available on the City’s website at www.ci.chanhassen.mn.us
Departments and Services Natural Resources
Second Generation Surface Water Management Plan
ToolsTools
Stormwater pondsStormwater ponds SwalesSwales Rain gardens & infiltration/filtrationRain gardens & infiltration/filtration Clustering developmentClustering development Alternatives to impervious surfacesAlternatives to impervious surfaces Green roofsGreen roofs Underground retentionUnderground retention Cooperation!Cooperation!
General ChallengesGeneral Challenges Managing expectationsManaging expectations
AestheticsAesthetics DevelopmentDevelopment
RetrofittingRetrofitting Non-degradationNon-degradation Funding Funding E&SC on individual home sitesE&SC on individual home sites Effective educational programs Effective educational programs Stabilizing waterwaysStabilizing waterways Multiple WMOsMultiple WMOs
Specific ChallengesSpecific Challenges ImplementationImplementation CapabilitiesCapabilities
SoilsSoils GroundwaterGroundwater
InspectionInspection MaintenanceMaintenance Tracking/EnforcementTracking/Enforcement
What We’ve Learned…What We’ve Learned…
Think aheadThink ahead Start now to identify and protect exceptional Start now to identify and protect exceptional
resourcesresources Use available resourcesUse available resources
County/State/FederalCounty/State/Federal Seasoned veteransSeasoned veterans
Establish funding sourcesEstablish funding sources If possible, acquire property now that you’ll If possible, acquire property now that you’ll
need laterneed later Embrace creativityEmbrace creativity
Questions?Questions?Lori HaakLori HaakWater Resources CoordinatorWater Resources CoordinatorPhone: 952.227.1135Phone: 952.227.1135Email: Email: [email protected]@ci.chanhassen.mn.usWeb Site: Web Site: www.ci.chanhassen.mn.uswww.ci.chanhassen.mn.us
Seminary Fen Wetland Complex