For nearly 100 years, our district has effectively maintained and improved levees to reduce flood risk for our community. In a recent community survey, some residents said they wanted more information about our projects and activities. Many know that we deliver free rock upon request for rock slope maintenance, but they aren’t quite sure how we spend the rest of our time. We’re the strong but silent type.

Currently, our levees meet the federal requirement for 100-year flood protection. Our long-term plan is to provide 200-year flood protection to our community. Engineering analyses are currently underway to determine what fixes are needed to achieve a higher level of flood protection.

We’ve detailed some of our past, current and planned work below. Please contact us if you have any questions. We’re glad you’re interested!

Dry Land Levee: This 3-mile stretch of levee extends along the south-western border of the district’s boundary.Technical studies showed that 4,000 feet of the levee needed additional height to meet federal guidelines. Nearly $2 million in improvements to this levee have been completed. [Map]

Ag Levee: Thanks to years of aggressive maintenance this levee meets guidelines for 100-year certification. [Map]

Urban Levee: We added additional height to roughly 500-1,000 feet of this levee to meet federal guidelines. [Map]

Maintenance Dredging: More than 150,000 cubic yards (equivalent to 10,000 dump trucks) of dredging material was excavated from the bottom of bays and sloughs and pumped into neighboring detention ponds in 2004. Recent surveys indicate that no additional work is needed at this time.

Pre-Treatment of Silty Water: Silt is entering the bays from the drainage area west of Discovery Bay. We are working with other local agencies to identify and pay for a long-term strategy for sediment management for our area. In the meantime, maintenance dredging can help reduce the amount of silt in our bays.

Kellogg Creek Widening: Kellogg Creek is very narrow at the point where it intersects with Indian Slough. Widening in that area could improve water quality, reduce erosion and provide additional flood protection. Currently, the project is under environmental review.

Indian Slough Berm Restoration: The berms (islands) on Indian Slough between the intersection of Kellogg Creek and the entrance to the Marina are eroding. If these berms are not restored and/or protected, they will disappear. This would result in the loss of wildlife habitat and the separation between fast water and docks.