1 / 24

RAIN GARDENS Discovery Initiative

RAIN GARDENS Discovery Initiative. Bill Sciarappa, Ph.D. Vivian Quinn, Program Assistant. PROBLEMS & POLLUTANTS Flooding Erosion Increased Sediment Beach Closures Non-point Pollution . Stormwater.

gitel
Télécharger la présentation

RAIN GARDENS Discovery Initiative

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RAIN GARDENSDiscovery Initiative Bill Sciarappa, Ph.D. Vivian Quinn, Program Assistant

  2. PROBLEMS & POLLUTANTS Flooding Erosion Increased Sediment Beach Closures Non-point Pollution Stormwater Development & imperviousness reduces the natural capacity of soil & vegetation to infiltrate and take up rainfall • Gas and oil • Bacteria-pet waste • Eroded soil • Road salt • Litter • Pesticides • Fertilizers

  3. Polluted Stormwater Stormwater runs over streets, parking lots & lawns & washes into streams, lakes & rivers • Sedimentation  Smothers aquatic life • Nitrogen  ammonia kills fish • Phosphorus fertilizers  Algae blooms • Salt & petrochemical contamination  mortality • Bacterial peaks  human health hazards

  4. What is a Watershed? The area of land that drains to a water body - We’re all connected through waterflows through our watershed. Restoring the natural buffers along our streams, lakes and ponds provides major environmental benefits to all citizens.

  5. SOLUTION: BIORETENTION minimizes impact of stormwater • Engineered wetlands • Infiltration basins • Grassy swales • Bioretention basins • Rain Barrels * • RAIN GARDENS* Physical water retention & biological & chemical Interaction between soil, vegetation & water * No permits needed

  6. Reduces pollution from non-point sources Conserves water Recharges underground water supply WHAT IS A RAIN GARDEN? A specially landscaped, shallow depression that captures & filters polluted stormwater runoff

  7. Stormwater is directed into garden by pipes, swales, or curb openings LOCATION, LOCATION • Residential – typically 100-300 sq. ft. • Catch rainwater from roof • From driveway & sidewalk • Anyplace that will allow stormwater to be captured Home Gardens

  8. Sea Girt Fair Haven MUNICIPAL RAIN GARDENS Wall Bike Path Asbury Park

  9. Protecting Raritan Bay - Keyport Rain Garden

  10. SCHOOL RAIN GARDENS Keansburg Brookdale Spring Lake Heights Biotechnology HS

  11. A SOLUTION TO POLLUTION AT OUR AG BUILDING

  12. Completed & functioning in every season

  13. GETTING STARTED • Preliminary Observation • Site Selection • Where it will receive runoff • Area without ponding • Select flat part of yard for easier digging • At least 10 ft. from foundation • Not directly over septic system • Not suitable where the seasonal high water table level is less than 24" • Full or partial sunlight – first choice • Check utility markouts

  14. http://www.water.rutgers.edu/ Select rain gardens website

  15. PLANT SELECTIONS • Select WET & DRY tolerant plants • Suggest native plants • Do not require fertilization • Absorb water more efficiently than lawns • Easier to maintain • Inexpensive • Different heights, shapes & textures • Vary blooming times • Sun & Shade varieties

  16. SHRUBS Cranberry Viburnum: Viburnum Trilobum - large shrub, as wide as it is tall. Bright red fruit is attractive and edible. Prefers moist, well drained soil. 6-12' Inkberry Holly: Ilex Glabra - midsized evergreen shrub. Prefers moist soil, but can tolerate dry. 6-8'.

  17. PERENNIALS Wild Bergamot: Monarda Fistulosa - perennial found in dry fields, thickets, and woodland borders. 2" clusters of pale pink-lilac flowers in late summer Blue Flag: Iris versicolor - native iris of northern wetlands with blue flowers and sword shaped leaves. Soft Rush: Juncus Effusus - clump forming rush which usually raches about 3' . Stems are unbranched and round in cross section. To 3'.

  18. Themed Rain Gardens Themed Rain Gardens • Bird & Butterfly • Tree + Shrub • Ornamental bark, flowers, and berries • Deer Tolerant

  19. PLANTING Arrange plants according to light needs, spacing requirements & heights Add a layer of mulch Invite your friends!

  20. Watering – until established • Weeding - occasional • Pruning • Deadheading MAINTENANCE • Remove sediment buildup/trash/leaves at inflow & outflow • Re-vegetate & add mulch as necessary • Soil Testing – every 3-5 yrs • NO Fertilizing – sustains itself

  21. AFTER • Function • Beauty • Value BEFORE • Rainwater wasted • Pollution created

  22. Average small sized homeowner rain garden $3 to $5/sq. ft. – yourself $10 to $12/sq. ft. - landscaper Average medium landscaper built rain garden Material - $2,000 Labor - $1,500 Average large sized municipal rain garden demonstration Total unit cost $5,000 Expected buy-in of municipality $1,500 & boro labor, volunteer help, community equipment. Possible rain garden contest for streamside living in the municipality ESTIMATED COSTS

  23. CONSTRUCTION

  24. Think Globally – Act Locally

More Related