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HomeMy WebLinkAboutPrintable_PresentationPublic Information Meetings Public Information Meetings Campbell Creek Campbell Creek StormwaterStormwater Management PlanManagement Plan March 19 and March 26, 2008March 19 and March 26, 2008 Westhaven Golf Course ClubhouseWesthaven Golf Course Clubhouse John Fitzpatrick, Acting City Manager David Patek, P.E., Director of Public Works Steve Gohde, P.E., Assistant Director of Public Works James Rabe, P.E., Civil Engineer II – Storm Water Laura Gray, Civil Engineer I – Storm Water OverviewOverview ••Purpose of PlanPurpose of Plan ••Watershed AreasWatershed Areas ••Flooding HistoryFlooding History ••Flooding AnalysisFlooding Analysis ••Water Quality AnalysisWater Quality Analysis ••RecommendationRecommendation ••Other ConcernsOther Concerns ••FundingFunding Purpose of PlanPurpose of Plan ••City of Oshkosh frequently experiences City of Oshkosh frequently experiences flooding during rain events.flooding during rain events. ••EPA mandated DNR to administer storm EPA mandated DNR to administer storm water discharge regulations under Clean water discharge regulations under Clean Water Act.Water Act. ••DNR mandated storm water quality DNR mandated storm water quality improvements for storm water.improvements for storm water. Watershed AreasWatershed Areas ••Campbell CreekCampbell Creek ––Blue AreaBlue Area ––Green Area Green Area ••Sawyer CreekSawyer Creek ––Orange AreaOrange Area ––Green AreaGreen Area ••Stringham CreekStringham Creek ––Red AreaRed Area Flooding HistoryFlooding History Flooding Incidents Since 1990Flooding Incidents Since 1990 ••Four Presidential Disaster DeclarationsFour Presidential Disaster Declarations ––1990, 1993, 2001, 20041990, 1993, 2001, 2004 ••Four Minor Flooding IncidentsFour Minor Flooding Incidents ––1996, 1999 (2), 20001996, 1999 (2), 2000 Source: Winnebago County Hazard Mitigation Plan: 2004-2008 Flooding HistoryFlooding History ••Reported Flooding Reported Flooding from the June 2004 from the June 2004 and June 1993 Flood and June 1993 Flood Events.Events. ••Only includes flooding Only includes flooding incidents reported to incidents reported to the Department of the Department of Public Works.Public Works. Flooding HistoryFlooding History Campbell Creek overflows banks, washing out railroad, flooding a parking lot, and flooding residential properties and structures. June, 2004 9th Avenue 20th Avenue US H 4 1 Flooding HistoryFlooding History Street flooding at Ardmore Trail and Cumberland Trail. June, 2004 9th Avenue 20th Avenue US H 4 1 Flooding HistoryFlooding History Campbell Creek overflows banks, flooding parking lot and buildings at Landmark Plaza. Substantial damage to contents of stores. June, 2004 US H 4 1 9th Avenue Witzel Avenue Flooding HistoryFlooding History Flooding near Josslyn Street and Witzel Avenue backs up flood water onto the Lourdes Academy construction site. June, 2004 US H 4 1 9th Avenue Witzel Avenue Flooding AnalysisFlooding Analysis ••City staff worked with Consultant to review City staff worked with Consultant to review undeveloped land for consideration.undeveloped land for consideration. ––99thth and Washburnand Washburn ––Westhaven Golf CourseWesthaven Golf Course ––Adjacent to Bemis on Universal StreetAdjacent to Bemis on Universal Street ––Northwest corner of STH 44 and Universal StreetNorthwest corner of STH 44 and Universal Street ––Northeast corner of STH 44 and Waukau AvenueNortheast corner of STH 44 and Waukau Avenue ––Agricultural Land outside of City LimitsAgricultural Land outside of City Limits ••All above alternatives include All above alternatives include TiplerTipler Middle Middle School Dry Detention and Armory Wet School Dry Detention and Armory Wet Detention Sites.Detention Sites. Pond AnalyzedPond Analyzed Pond Location Not FeasiblePond Location Not Feasible Bemis Property West Corner STH 44/Universal East Corner STH 44/Waukau Southeast of STH 44/Clay Road Westhaven Golf Course Park/Ponds STH 44 W. 20th Ave 9th Ave Agricultural Land Outside of City Limits Northeast Corner STH 44/Waukau 9th & Washburn US H 4 1 9th & Washburn Flooding AnalysisFlooding Analysis Westhaven Golf Course 221.5 110.2 98.5 215.1 101.1 City Storage Provided (Acre-Feet) $21,060,500 $11,067,900 $14,003,500 $16,609,700 $18,311,700 Opinion of Probable Cost $95,100 $100,400 $142,200 $77,200 $181,100 Cost per Acre-Foot of City Storage Provided Yes2Westhaven Golf Course and Reduced Armory Meets Landmark Plaza Criteria Watershed- Wide Benefit Rank Alternative Description Westhaven Golf Course and Expanded Armory Agricultural Land Outside of City Limits and Expanded Armory Northeast Corner of STH 44 and Waukau Avenue and Expanded Armory 9th and Washburn and Expanded Armory Yes1 Yes6 Yes5 Yes4 1. Costs do not include the stormwater quality portion of the detention ponds (excavation below normal WSEL). 2. All Alternatives include the Tipler Middle School Dry Detention Basin. 3. An Acre-Foot is a unit of volume equal to one foot of depth spread over an acre of area (1Ac-ft = 43,560 ft3). Flooding AnalysisFlooding Analysis Notes: Water Quality AnalysisWater Quality Analysis ••Wisconsin DNR Storm Water Discharge Permit Wisconsin DNR Storm Water Discharge Permit Coverage issued on January 2, 2007Coverage issued on January 2, 2007 ••Permit requires reduction of pollution to waters Permit requires reduction of pollution to waters of the stateof the state ••Pollutant of Interest: Total Suspended Solids Pollutant of Interest: Total Suspended Solids (TSS)(TSS) ••Must reduce Base Load by 40%Must reduce Base Load by 40% Water Quality AnalysisWater Quality Analysis ••City of Oshkosh TSS Pollution InformationCity of Oshkosh TSS Pollution Information ––Base Load: 1693 tons/yearBase Load: 1693 tons/year ––Required Reduction: 677 tons/year (40% of 1693)Required Reduction: 677 tons/year (40% of 1693) ––Current Practices Reduction: 309 tons/yearCurrent Practices Reduction: 309 tons/year ––Additional Reduction Required: 368 tons/year (677Additional Reduction Required: 368 tons/year (677 -- 309)309) Water Quality AnalysisWater Quality Analysis ••99thth & Washburn: 13.8 tons/year& Washburn: 13.8 tons/year ••Westhaven Golf Course: 68.1 tons/yearWesthaven Golf Course: 68.1 tons/year ––Front Nine: 49.2 tons/year (Campbell Creek Side)Front Nine: 49.2 tons/year (Campbell Creek Side) ––Back Nine: 18.9 tons/year (Sawyer Creek Side)Back Nine: 18.9 tons/year (Sawyer Creek Side) ••STH 44 & Waukau: 2.0 tons/yearSTH 44 & Waukau: 2.0 tons/year ••Agricultural Land Outside City: 0.0 tons/yearAgricultural Land Outside City: 0.0 tons/year Tipler Dry Detention provides no water quality benefit. Armory Wet Detention has no water quality benefit calculated due to navigable waterway adjacent to pond location. DNR typically requires small storm events (which carry majority of pollutants) to remain within waterway. RecommendationRecommendation ––Zero Water Quality Zero Water Quality BenefitBenefit ––Lowest Total CostLowest Total CostAgricultural Land Agricultural Land Outside City LimitsOutside City Limits ––Minimal Water Quality Minimal Water Quality BenefitBenefit ––Second Lowest Total Second Lowest Total CostCost STH 44 and WaukauSTH 44 and Waukau ––Loss of Golf CourseLoss of Golf Course––Most Water Quality Most Water Quality BenefitBenefit ––Most Cost EffectiveMost Cost Effective Westhaven Golf CourseWesthaven Golf Course ––Commercially Commercially Developable LandDevelopable Land ––Wetland on South Edge Wetland on South Edge of Propertyof Property ––Reasonable Water Reasonable Water Quality BenefitQuality Benefit 99thth and Washburnand Washburn ConsConsProsProsPond LocationPond Location All Alternatives meet goals of study at Landmark Plaza. These pros and cons are only for purpose of evaluating the alternatives against each other. Other areas of concern are discussed later. RecommendationRecommendation ••The Westhaven Golf Course Alternative has been The Westhaven Golf Course Alternative has been recommended for several reasonsrecommended for several reasons ––Most cost effective solution ($/AcMost cost effective solution ($/Ac --Ft)Ft) ––Provides the most water quality benefit Provides the most water quality benefit ––Provides land for flood storage for both Campbell Provides land for flood storage for both Campbell Creek and Sawyer Creek Watersheds.Creek and Sawyer Creek Watersheds. ••Landmark PlazaLandmark Plaza --Conveyance Conveyance ImprovementsImprovements ••TiplerTipler Dry Detention BasinDry Detention Basin ••ArmoryArmory ––New Wet Detention BasinNew Wet Detention Basin ––Upstream Pipe UpsizingUpstream Pipe Upsizing ••Westhaven Golf Course Westhaven Golf Course Park/PondPark/Pond ••WisDOTWisDOT ––Upgrading Storm Sewer Along USH Upgrading Storm Sewer Along USH 41 to 5041 to 50 --Year Design StormYear Design Storm RecommendationRecommendation Birds Eye View RenderingBirds Eye View Rendering ⌧ . RecommendationRecommendation RecommendationRecommendation Other ConcernsOther Concerns ••AestheticsAesthetics ••SafetySafety ••GeeseGeese ••MosquitoesMosquitoes ••Adjacent Property ValuesAdjacent Property Values Other ConcernsOther Concerns ••AestheticsAesthetics ––Pond side slopes will be planted with a mixture of Pond side slopes will be planted with a mixture of flowering and nonflowering and non --flowering native prairie plants.flowering native prairie plants. ––Vegetated Landscape Buffer between recreation trail Vegetated Landscape Buffer between recreation trail and residential properties will be planted with native and residential properties will be planted with native prairie plants, trees and shrubs. Buffer will provide prairie plants, trees and shrubs. Buffer will provide privacy to residents adjacent to facility.privacy to residents adjacent to facility. ––Recreation Trail could be asphalt or stone chips. Recreation Trail could be asphalt or stone chips. WIOUWASH Trail is stone chips.WIOUWASH Trail is stone chips. Other ConcernsOther Concerns ••SafetySafety ––City of Oshkosh design standards exceed City of Oshkosh design standards exceed recommendations of Wisconsin DNR.recommendations of Wisconsin DNR. 1 foot1 foot0 0 ––1.5 feet1.5 feetSafety Shelf Water Safety Shelf Water DepthDepth FlatFlatMax. 10:1 (H:V)Max. 10:1 (H:V)Safety Shelf SlopeSafety Shelf Slope 10 feet10 feet8 feet8 feetSafety Shelf WidthSafety Shelf Width Max. 4:1Max. 4:1Max. 3:1 (H:V)Max. 3:1 (H:V)Slopes Above WaterSlopes Above Water City of OshkoshCity of OshkoshDNRDNRDescriptionDescription Other ConcernsOther Concerns ••SafetySafety ––Native prairie vegetation creates a vegetative barrier Native prairie vegetation creates a vegetative barrier to discourage use.to discourage use. ––Emergent plantings on safety shelf create a further Emergent plantings on safety shelf create a further vegetative barrier to discourage use.vegetative barrier to discourage use. ––Minimum 10 foot wide area on each side of Minimum 10 foot wide area on each side of recreation trail planted in recreation trail planted in ““lowlow--growgrow””vegetation to vegetation to create open feel around trail.create open feel around trail. ––Pipe ends and outlet structure grated.Pipe ends and outlet structure grated. Other ConcernsOther Concerns ••GeeseGeese ––Geese use water bodies that allow easy access from Geese use water bodies that allow easy access from water surface to shore lands.water surface to shore lands. ––Emergent plantings on safety shelf create a Emergent plantings on safety shelf create a vegetative barrier that geese cannot walk or swim vegetative barrier that geese cannot walk or swim through.through. Other ConcernsOther Concerns ••MosquitoesMosquitoes ––Mosquitoes breed in very small stagnant pools of Mosquitoes breed in very small stagnant pools of water (bird baths and old tires for example)water (bird baths and old tires for example) ––Water depth in wet ponds is prohibitive to mosquito Water depth in wet ponds is prohibitive to mosquito breeding:breeding: ••Permanent pools in ponds are typically 5Permanent pools in ponds are typically 5 --6 feet in depth.6 feet in depth. ••Safety Shelf is 1 foot in depth.Safety Shelf is 1 foot in depth. ––Native prairie plantings provide habitat that Native prairie plantings provide habitat that encourages inhabitation by predators (dragonflies and encourages inhabitation by predators (dragonflies and birds for example)birds for example) Other ConcernsOther Concerns ••Adjacent Property ValuesAdjacent Property Values ––Property values adjacent to a wet Property values adjacent to a wet stormwaterstormwater pond pond increased by 4% to 23%.increased by 4% to 23%. ––Homes within 300 feet of water sell for up to 28% Homes within 300 feet of water sell for up to 28% more than comparable homes elsewhere.more than comparable homes elsewhere. ––Peoples preference for living location (most to least Peoples preference for living location (most to least preferred): Next to pond, adjacent to natural area, on preferred): Next to pond, adjacent to natural area, on dead end street, next to golf course, adjacent to dead end street, next to golf course, adjacent to public park.public park. Source: “How to Win Land Development Issues”by Community & Environmental Defense Services, January 2003, updated September, 2007 FundingFunding ••Stormwater UtilityStormwater Utility ••Municipal Flood Control Grant ProgramMunicipal Flood Control Grant Program ––State 70% / Local 30% MatchState 70% / Local 30% Match ––Maximum Grant is $200,000Maximum Grant is $200,000 ••UNPS and Stormwater Grant ProgramUNPS and Stormwater Grant Program ––State 50% / Local 50% MatchState 50% / Local 50% Match ––Maximum Grant is $150,000 (Construction) plus $50,000 for Maximum Grant is $150,000 (Construction) plus $50,000 for property acquisitionproperty acquisition ••FEMA PDM (PreFEMA PDM (Pre --Disaster Mitigation) ProgramDisaster Mitigation) Program ––Federal 75% / Local 25% MatchFederal 75% / Local 25% Match ––Maximum Grant is $3 millionMaximum Grant is $3 million Questions?Questions? Thank you for your time!Thank you for your time! Staff will be available at each display Staff will be available at each display station to answer questions.station to answer questions. Questions and comments may be left in Questions and comments may be left in the comment box. Staff will respond to the comment box. Staff will respond to each as quickly as possible.each as quickly as possible.