Prop 4 – Nature-Based Solutions (NBS)

The Prop 4 Nature‑Based Solutions (NBS) grant, funded by California’s 2024 Climate Bond, supports multi‑benefit watershed projects in the San Diego River, Sweetwater, Otay and Tijuana River watersheds. Eligible nonprofit, public agency, and tribal applicants may propose projects that improve flood and fire resilience, restore chaparral and forest, enhance water quality, protect wildlife corridors, remove invasive species, expand native habitat, develop the San Diego River Trail, and increase public access to parks and open space. The grant provides up to $8 million in total funding (award amounts TBD) with a two‑year performance period. No letter of intent or matched funding is required. Applications open 8 June 2026; award announcements are expected Fall/Winter 2026. • Eligible applicants: nonprofit, public agency, tribal government • Geographic focus: San Diego River watershed and adjacent Sweetwater, Otay, Tijuana watersheds • Funding: up to $8 M total (award size dependent) – state‑funded via the 2024 Climate Bond • Project types: land conservation, flood/fire risk reduction, water‑quality improvement, habitat restoration, trail development, invasive‑species removal, cultural/tribal preservation • Period of performance: 2 years • No matching funds or LOI required