This Spring and summer GrowNYC completed several new rainwater harvesting projects and updated several existing ones.
At Governors Island Teaching Garden, we installed 3 systems from a child sized shade structure that collects into 2 - 5 gallon containers and allows children to open and close valves which divert the flow of water either to the containers, a see through hose or a drain to the adjacent rain garden.
To collect rainfall from the adjacent former Coast Guard housing, a 500 gallon tank was installed to collect from a large area of roof and two 50 gallon barrels collect from a smaller roof area. A flow meter was installed on the 500 gallon tank to monitor water usage. These installations were completed using funding provided by the NYS Pollution Prevention Institute through a grant from the NYS Department of Environmental Conservation. 6,000 visitors have interacted with the Green Infrastructure projects on Governors Island this season.
At the Brook Park Community Garden in the Bronx, GrowNYC worked on a week long effort with community gardeners and volunteers from In Good Company to install 3 new rainwater systems. A 1000 gallon cistern captures rainfall from the downspout of an adjacent home, a 250 gallon tank collects from an existing shed and 2 - 50 gallon barrels store water captured from a chicken coop.
GrowNYC staff worked with 10 youth aged 14 to 18 from Brotherhood Sister Soul in West Harlem to repair an existing rainwater system and install a new system in the Frank White Garden. Each system has 100 gallon storage and collects from existing shade structures in the garden. The youth learned about the New York City combined sewer system as well as getting hands on building experience developing pollution prevention solutions.
GrowNYC staff completed a shade structure in the Morning Glory Garden in the Bronx which collects rainwater into a 300 gallon tank.
A new 300 gallon tank was installed at the Greenspace on Fourth Garden in Brooklyn. This new garden on land atop a water tunnel access site is a native plant garden where the gardeners installed a rain garden in collaboration with Brooklyn GreenBridge . The overflow from the rainwater system is diverted to the rain garden.
A 1000 gallon rainwater system at the St. John Cantius Garden in East New York, Brooklyn was reconnected to the adjacent building after it had been disconnected due to a change of ownership of the building.
These new and reconnected systems now bring the total number of rainwater harvesting systems in New York City Community Gardens to over 140 systems with the capacity to collect more than 1.5 million gallons of rainfall per year. An interactive map of these gardens and all rainwater harvesting sites can be found here.