The Tijuana River Valley community is at risk of flooding from the Tijuana River.[3] The Tijuana River is considerably polluted with trash, sewage, and other pollutants that threaten the valley community, and the community's environmental resources whenever it floods.[4] Flooding is contained for the most part during dry periods. Yet when it rains the risk of floods and the associated pollution are a significant problem for the Tijuana River Valley.[5] In addition to damage to the Valley's environmental and recreational resources, the pollution present in the floodwaters can spread diseases.[4] Area beaches had almost 1,600 closed days because of this pollution between 2007 and 2017, far more than beaches North of the Valley.[6]