The Regional Stormwater Management Program (RSMP) provides developers wtih a potential alternative to providing on-site detention ponds. If technical conditions warrant, developers have two options:
Construct conveyance improvements
Make a payment for participation that will be used by the City of Austin for regional flooding solutions specific to the watershed.
In either case, the developer must demonstrate via engineering calculation that no adverse impacts will occur if on-site detention is not provided.
RSMP eligibility is at City staff discretion. On average, about 130 RSMP applications are submitted annually with about 50 applications accepted to either allow a payment to be made or to accept other drainage improvements in lieu of on-site detention. The other cases each year provide on-site detention per code and criteria. Payment and execution of the agreement must occur before the final plat or site plan approval.