The library system also received $1,500 from the Franklin County Soil and Water Conservation District and will continue to seek funding for the project, estimated to cost $48,000.
The rain garden will be planted on the west side of the library at 2280 Hard Road. Features will include rain-garden beds with more than 40 varieties of native plants, water features, native rocks and boulders and a bird habitat area.
The space will be used for adult and youth programs focused on science and nature, for rain garden clinics and for programs by local organizations, such as garden clubs.
People also will be able to visit the garden to read, learn and relax.
The library system's green team developed the plans. It also has worked to plant native perennial beds at the Old Worthington Library.
Adult-services librarian Meredith Southard, who chairs the green team, said the outdoor learning space is very exciting.
"The library wants to take a proactive role in educating the community about the environmental benefits of planting native plant species, which cost less to maintain, require no fertilizers or pesticides and are drought-tolerant," she said.
The plants also benefit bees, birds, butterflies and other wildlife, she said.
No official planting date has been set, but residents living near the Northwest Library will be notified when a date is selected and will be invited to participate.