A newly paved parking lot at the NLRA office increases runoff velocity, and funnels storm water directly into the Newfound River across the road. Our task is to build a raingarden that will absorb pollutants from the runoff before it enters the storm drain.
Lake Conservation Corps members Christy Maloney and Brie Gickas begin the daunting task of digging out the fill material surrounding the storm drain.
Kevin Arnold joins in to assist removing all the fill within a 15' radius of the storm drain. The raingarden capacity should equal the water flow coming off the parking area and the roof of our office building.
Under hot and humid summer skies a full complement of LCC members, under the guidance of Jared Teutsch (in jeans), Executive Director of the NH Lakes Association (funder of the Lake Conservation Corps), continues to increase the depth of the "bowl" surrounding the storm drain.
At approximately 12" below the storm drain footing.
LCC now digs "channels" from the parking lot swale to the sides of the storm drain. We want to direct runoff into our "holding area" before the level of the water rises to the storm drain.
Hot hard work!
Kuplin Land Services donates gravel and erosion control mix.
Layer 1 is 2" gravel, filling the base of our "bowl".
Casey Kuplin spreads the gravel layer around the bottom of the bowl, and into the directional channels.
Casey, Brie and Christy add layer 2 - a landscaping fabric donated by Simple by Nature, covering the gravel.
Layer 3 is screened loam, also donated by Kuplin Land Services.
The loam is raked out on top of the landscaping cloth, and up over the berm created by the fill we dug out!
Next, is the fun part - planting perennials donated from Belknap Landscaping, and also from member donations. The garden begins to take shape!
Voila - the raingarden! The plants are varieties that are very hardy - they have to be able to withstand periods of soaking as well as drying, and be able to withstand full sun. Blueberries, irises, phlox, to name a few.