More than $300 million in public subsidy aimed at a pair of Anacostia riverfront projects threatens D.C.’s debt capacity and puts future bond sales at risk of higher interest rates, District finance officials say.

Between the Southwest Waterfront and Poplar Point developments, D.C. leaders are talking about investing $348 million in new communities along the Anacostia. But a spokesman for Chief Financial Officer Natwar Gandhi said Thursday the amount of debt proposed comes perilously close to the CFO’s recommended caps.