The District is responsible for operating and maintaining over 16 miles of levees that surround West Sacramento. It is also responsible for operating and maintaining the internal drainage system – canals, ditches, pump stations and detention basins – that collects and removes rain and storm waters to prevent flooding. Properties are at greater risk from flooding from internal drainage than from rivers.

Levee operations and maintenance are funded by property assessments collected by the West Sacramento Flood Control Agency. The District collects a separate property assessment for the operations and maintenance of the internal drainage system. Funds collected for levee operations and maintenance may not be spent on the internal drainage system, and vice versa.

RD 900 invests its assessment revenues in required operations and maintenance activities for the internal drainage system, to include:

• Removing debris and vegetation from canals and ditches
• Maintaining electronics and mechanics of pump stations, including regular major maintenance to expand life of pumps
• Removal of vegetation and other debris in and around drainage ponds
• Regulatory permitting and compliance (air and water quality)
• Maintaining fences and gates
• Controlling rodent and squirrel infestation
• Handling of toxic materials
• Replacing and rehabilitating equipment