CITY OF MADISON PROPOSED PROJECT Wingra Park Shoreline Repair
Wingra Park Current Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline Concrete Abutment + Wooden Pier
Wingra Shoreline Concrete Abutment + Wooden Pier
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline
Wingra Shoreline Plan View
Wingra Low Energy Shoreline Wave energy low Different from Mendota/Monona Smaller, shallower lake Short fetch (small waves) Cannot hard armor shoreline (per DNR) Limits riprap use
Types of Shoreline Stabilization Soft-armor bioengineering-plant materials into structures that are designed to withstand wave and ice action Appropriate where plants can grow Root structures naturally stabilize the shoreline Rock riprap-common hard-armor technique which consists of large rocks placed in the water and up along the shoreline Lined with geotextile fabric to prevent wave action from removing soil from behind rocks, causing slumping Erosion control fabrics-useful on slopes for holding soil in place until plants establish from seed Geotextile fabrics-made of densely woven material that can withstand intense wave energy when placed under rock riprap http://www.shoreline.msu.edu/shorelinemgt/erosion-control/
Lake Access Design Considerations Met with key park users throughout design process Friends of Lake Wingra, Wingra Boats, UW Rowing, Logrollers Equitable, sustainable opportunity for water access for multiple purposes Signature design that provides opportunities to interact with the shoreline as well as: Reduce maintenance and capitol costs Provide shoreline protection from wave and ice damage Can be permitted through the Wisconsin DNR and Army Corp of Engineers permitting process Aesthetic integration into the shoreline
Proposed Shoreline Changes Encapsulated Soil Lifts Rock Riprap Limestone Step Lake Access New Dock Moving location of UW Boating Pier Adding small canoe/kayak launch
Wingra Shoreline Design Layout
Riprap Rendering to Scale
Other Similar Projects: Riprap on the Yahara River
Other Similar Projects: Riprap on the Yahara River
Proposed Riprap Location
Limestone Steps Rendering to Scale
Other Similar Projects: Limestone Steps on the Yahara River
Other Similar Projects: Limestone Steps being built Lake Monona
Other Similar Projects: Limestone Steps Ester Park Lake Monona
Proposed Limestone Step Location
Encapsulated Soil Lifts Rendering to Scale
Encapsulated Soil Lifts Goals Reduce erosion into lake Aesthetically pleasing, natural Process Encapsulation of soil in biodegradable blankets formed into layers The layers, or lifts, are stacked up on the bank, stepped back to create the desired slope Seeded and planted with natives http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Encapsulated Soil Lifts http://www.shoreline.msu.edu/shorelinemgt/demonstration/lakescape3/
Proposed Encapsulated Soil Lift Locations
Proposed Native Sedges and Forbs Low perennials and sedges with a height <3 Tolerant of fluctuating water and long duration under water Planting species to be determined based on elevation from ordinary high water mark
Proposed Native Sedges and Forbs Example Plants: Iris versicolor Blue Flag Iris Lobelia cardinalis Cardinal Flower Saggittaria latifolia Arrowhead Carex stipata Awl fruited Sedge Carex comosa Bottlebrush Sedge Carex molesta Field Oval Sedge Carex vulpinoidea Brown Fox Sedge Scirpus atrivirens Dark Green Bulrush Polygonum amphibium Water Smartweed Alisma trivale Water Plantain Juncus effusus Common rush
Proposed Shoreline Changes 1:1 riprap for log rollers Bumping out all features to protect trees 1 maple deemed unhealthy by forestry Will be replaced in similar area Replacing wooden deck Moving UW Women s Rowing dock Small canoe/kayak launch Resetting corner of stone wall at boat ramp
Wingra Park Concrete Abutment + Wooden Pier
Wingra Shoreline
Other Shoreline Details
Anticipated Timeline Permitting - fall/winter 2017 Construction - early spring 2018 or late fall 2018
COMMENTS OR QUESTIONS? Contact Information: Jojo O Brien 266 9721 JOBrien@cityofmadison.com
Citations http://www.shoreline.msu.edu/shorelinemgt/
MSU ESL Detail