North Vernon retained Lochmueller Group (Lochgroup) to review options to address flooding in four areas of the city. Lochgroup prepared a Preliminary Engineering Report and then performed design and construction administration of the improvements that utilize Best Management Practices and incorporate green solutions to drainage issues in four areas:
- City Park: Three rain gardens, along with over 500 lf of vegetated swales were built to catch a large volume of runoff from park buildings, tennis and basketball courts, and a parking lot. To construct mowable swales, workers excavated approximately 4 feet deep and installed a perforated drainage pipe. Gravel was backfilled below the swale and topped with soil and plantings.
- Shull Park: Improvements to this residential area featured installation of a rain garden and 12,000 lf of vegetated swales along roadways with underground storage of the stormwater.
- College Street: Improvements to this residential area featured a rain garden and 200 lf of vegetated swales to capture and treat runoff.
- Lincoln Avenue: Improvements to this residential area featured 2 rain gardens and more than 1,400 lf of vegetated swales.