Flood Project Integrity & Inspection
Flood Project Integrity
Flood Project Integrity
The Flood Project Integrity Sections A and B provide engineering support in the assessment of performance of project levees. Several programs are being conducted to gather and manage information related to field performance to evaluate the conditions of the Sacramento and San Joaquin River Flood Control System. These programs include:
- Erosion Survey of the San Joaquin River and Tributaries. Integrity Section B conducts annual supplemental waterside erosion survey of the San Joaquin River Flood Control system to assist in the documentation and monitoring of erosion sites. The specific purpose of the Supplemental Waterside Erosion Surveys of the SJRFC System are to; a) inspect the waterside levee for erosion activity, b) document and report new erosion sites, c) document and report current condition of previously identified erosion sites, and d) rank the severity of erosion sites based upon the findings from the field survey.
- Development of a Library of Hydraulic Models (LOM). A web-based library is being developed for preservation and use of flood and water management models and to make engineering and scientific models, software (or links to site for downloading or purchasing the software), and software documentation (or links to site for downloading the documentation) developed or used under the FloodSAFE California Program available to modelers and model developers. Pilot Project is being developed in Phase 1 of this project.
- Levee Instrumentation Pilot Project. Integrity Section A is currently in the design and permitting process to install a network of sealed, vibrating-wire piezometers at a site along the left bank of the Sacramento River, south of the Tisdale Bypass to measure changes in subsurface water pressure during high-water events. The information that will be collected will be used to evaluate the feasibility of developing a network of piezometers along the flood control system that would provide real-time information to the Flood Operations Center to improve response to potential flood conditions. In addition, the results of the levee instrumentation pilot project will provide valuable information to evaluate seepage pressures to calibrate computer models.
- Utility Crossing Inventory Program. Utility crossing have been recognized as potential threat to the flood control system. Currently, the Department does not have a complete inventory of all utility pipes crossing Project levees, and as a result, any potential threat is unknown. The Branch will conduct a system-wide inventory of levee penetrations (pipeline utility crossings) to gather information regarding their location, geometry, age, material, and purpose. Field surveys will be conducted throughout the system to visually inspect each crossing and assess integrity site conditions.