The California Regional Water Quality Control Board for the Colorado River basin region last week adopted an amendment to its basin plan to include the Alamo River silt and sedimentation total maximum daily load requirements.
The adopted TMDL includes several changes from the draft released earlier this spring. Some of the changes include lengthening the timelines for compliance and a reduction of Imperial Irrigation District monitoring requirements.
The revisions are the result of public comments, particularly those made during a public workshop held in May, during which many Imperial Valley farmers and local agency officials questioned and critiqued the draft.
This TMDL aims to reduce the amount of silt and sediment in the Alamo River from 400 milligrams per liter of water to 200.