((a)) ** Requests for credits** With respect to an authorized flood damage reduction project, or separable element thereof, that has been constructed by a non-Federal interest under section 701b–13  of this title, or an authorized coastal navigation project that has been constructed by the Corps of Engineers pursuant to before , the Secretary may provide to the non-Federal interest, at the request of the non-Federal interest, a credit in an amount equal to the estimated Federal share of the cost of the project or separable element, in lieu of providing to the non-Federal interest a reimbursement in that amount or reimbursement of funds of an equivalent amount, subject to the availability of appropriations.1section 561 of this titleOctober 23, 20182018-10-23

((b)) ** Application of credits** At the request of the non-Federal interest, the Secretary may apply all or a portion of such credit to the share of the cost of the non-Federal interest of carrying out other flood damage reduction and coastal navigation projects or studies.

((c)) ** Application of reimbursement** At the request of the non-Federal interest, the Secretary may apply such funds, subject to the availability of appropriations, equal to the share of the cost of the non-Federal interest of carrying out other flood damage reduction and coastal navigation projects or studies.