Lake Ellyn Park 2013 Master Plan

More documents

Recommendations

Info

3. the vision Watershed-wide Strategies Many urban runoff pollutants entering Lake Ellyn, particularly those associated with sediments will not be taken up by the proposed in-lake improvements described above and instead they will settle to the bottom of the lake. Further, the proposed improvements above will not address the frequent pulses of stormwater runoff that cause water levels to fluctuate and destabilize the shorelines in addition to causing periodic flooding. To address these issues, a long-term, watershed-wide approach is recommended to reduce the volume and rate of stormwater runoff discharged to the lake during rainfall events. Glen Ellyn is not alone in its need to address the issues associated with stormwater runoff. Many communities are faced with the impacts and costs associated with managing stormwater runoff, including nuisance ponding, flooding, and the installation, maintenance, and replacement of a conveyance systems (ditches, pipes, and detention ponds). Many communities are currently investigating and beginning to implement watershed-wide infiltrationbased stormwater management approaches, sometimes referred to as “green infrastructure,” to naturally absorb and filter stormwater runoff to improve water quality and reduce the need and size of traditional storm sewer systems. Benefits of green infrastructure include reduced flooding, improved water quality, reduced discharge of polluted runoff to streams and rivers, and longer lasting, better performing streets, sidewalks, and alleys. Infiltration practices include permeable, decorative paving, rain garden planters, and bioinfiltration practices integrated within parkways and medians. These practices can be installed within or adjacent to nearly any street, alley, parking lot, or other paved, impervious surface to help capture and infiltrate rainwater runoff. Examples of this approach can be seen throughout the Chicago region as well as in West Union and Charles City, Iowa, where multiple blocks and streets have been reconstructed using infiltration practices and help contribute to a healthier watershed. The Iowa Green Streets Pilot Project in West Union, Iowa includes permeable pavement, bioretention, geothermal heating and cooling, art, and interpretation in complete-streets renovation throughout the downtown area 40 Glen Ellyn Park District
3. the vision 3. Landscapes and systems integration A healthy, more naturalized landscape at Lake Ellyn Park will provide a beautiful setting for passive recreation, support a broader array of native flora and fauna than exist at the park today, and provide an opportunity for interpretive learning about historical landscape systems. Naturalizing portions of the park landscape will reduce runoff and enhance on-site infiltration, allowing it to percolate into the ground. This will not only contribute to higher lake water quality, but will also serve as a demonstration of historically dominated groundwater hydrology. A healthier landscape will be established through a number of strategies: Root Zone Restoration and Woodland Re-establishment Healthy, existing canopy trees at Lake Ellyn Park should be protected and enhanced wherever possible. Delineated “root zone restoration areas” comprised of native sedge and perennial woodland plantings will improve soil and root conditions in order to renew, repair, and re-establish the woodland as a healthy system. The restoration of a healthy ground plain will enhance the natural regeneration of the remnant oaks and other native canopy trees. Additional locations throughout the park may be identified for other native tree and shrub plantings in order to increase biodiversity and beauty. Shoreline Restoration & Stabilization As previously discussed, the implementation of naturalized landscapes in strategic portions of the lake edge will help to stabilize the shoreline and filter sheet runoff from adjacent hardscape and landscaped areas. Plantings will also be designed to enhance the aesthetic qualities of the park and provide a more beautiful lakeshore. The addition of select native and ornamental grasses, sedges, rushes, and forbs will ensure a beautiful, resilient, and stable lakeshore, as well as provide improved Root zone restoration area vignette Lake Ellyn Park Master Plan 41
Page 1 and 2: Lake Ellyn Park 2013 Master Plan A
Page 3 and 4: preface Lake Ellyn Park Master Plan
Page 5 and 6: table of contents 1. Background & I
Page 7 and 8: 1 background & introduction a. Proj
Page 9 and 10: 1. background & introduction OAK ST
Page 11 and 12: 1. background & introduction Sustai
Page 13 and 14: 2 site analysis & existing conditio
Page 15 and 16: 2. site analysis & existing conditi
Page 29 and 30: 3 the vision a. Overall planning &
Page 31 and 32: 3. the vision 3. Green infrastructu
Page 33 and 34: 3. the vision Enhance environment/L
Page 35 and 36: 3. the vision Canopy trees with tur
Page 37 and 38: 3. the vision Lake Ellyn Park Churc
Page 39: 3. the vision Floating Restorers Th
Page 43 and 44: 3. the vision aquatic habitat. In m
Page 45 and 46: 3. the vision Bioretention along pe
Page 47 and 48: 3. the vision and will be located n
Page 49 and 50: 3. the vision 5. Site furnishings A
Page 51 and 52: 3. the vision Furnishings example f
Page 53 and 54: 3. the vision Furnishings example f
Page 55 and 56: 3. the vision One proposed alterati
Page 57 and 58: 3. the vision Boathouse Restrooms &
Page 59 and 60: 3. the vision Kitchen & South Patio
Page 61 and 62: 3. the vision Refuse & Recycling Th
Page 63 and 64: 3. the vision Conceptual renderings
Page 65 and 66: 3. the vision Outdoor performance a
Page 67 and 68: 3. the vision c. Implementation 1.
Page 69 and 70: 3. the vision Phasing priorities/ma
Page 71 and 72: 3. the vision 2. Maintenance, opera
Page 73 and 74: 3. the vision 2. Stormwater Retenti
Page 75: Lake Ellyn Park Master Plan January

Lake Ellyn Park 2013 Master Plan

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?