Chanhassen’s 2006 Surface Water Management Plan Carver County WENR Meeting March 27, 2007 Lori...

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

lhaak@ci.chanhassen.mn.us

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: lhaak@ci.chanhassen.mn.uslhaak@ci.chanhassen.mn.usWeb Site: Web Site: www.ci.chanhassen.mn.uswww.ci.chanhassen.mn.us

Seminary Fen Wetland Complex