Score: +14
(21/19/7)
Contra Costa County Grand Jury
• 2015-2016
Delta Levees in Contra Costa County How Well Do We Protect This Vital Safety System?
⚠️ Translation Notice: This content has been automatically translated. The original English text is the official version. Translation may contain errors.
⚠️ Este contenido ha sido traducido automáticamente. El texto original en inglés es la versión oficial. La traducción puede contener errores.
Findings and Recommendations 23 findings
F1
The portion of the Delta that lies within Contra Costa County includes six of the eight western islands, deemed by the State to be of particular importance to preventing seawater intrusion that would impair the quality of water for nearly two- thirds of the State, including much of the East Bay area.
No recommendations for this finding
F2
Loss (i.e. submersion) of any of the six islands in the Delta within Contra Costa County has potential to affect adversely much more than just Contra Costa County.
No recommendations for this finding
F3
Key infrastructure located within the Contra Costa County reclamation districts benefits the entire County, including major County roads and highways, a rail-line, PG&E power transmission lines, natural gas wells, petroleum pipelines, Contra Costa Water District intakes, pumping stations, and portions of both the Contra Costa Canal and EBMUD’s Mokelumne aqueduct.
No recommendations for this finding
F4
The levees in the County’s portion of the Delta have been built up or otherwise strengthened on a piecemeal basis over the century or more of their existence.
No recommendations for this finding
F5
Because the levees remain vulnerable to natural hazards and human activities, they require constant vigilance – i.e., frequent inspection coupled with timely maintenance and prompt repairs.
No recommendations for this finding
F6
The Army Corp of Engineers inspects federal levees, as well as non-federal levees that qualify for the Rehabilitation and Inspection Program.
No recommendations for this finding
F7
All of our County’s levees are non-federal levees and the only non-federal levees in the County that qualify for participation in the Rehabilitation and Inspection Program are in Holland and Byron Reclamation Districts.
No recommendations for this finding
F8
The only levees in the County that are independently evaluated for structural integrity are those in Reclamation Districts 800 and 2026, Holland and Byron.
No recommendations for this finding
F9
LAFCO’s MSR of the reclamation districts, which it performs every 5-years, focuses on financial and administrative management of the districts.
No recommendations for this finding
F10
LAFCO relies on self-reported information from the districts, without physical inspection, to evaluate how well the districts are maintaining the integrity of the levees for which they are responsible.
Related Recommendations (1)
R1
After identifying the necessary funding, LAFCO should consider including independent physical inspections of levee conditions, in addition to the self- reported evaluations of the conditions, in the MSRs of all County reclamation districts, if necessary by hiring an independent engineering firm to perform this function.
F11
There is no formal or standardized educational or training resource available to the districts for levee inspection, maintenance, and repair, which can support new levee superintendents or managers while they acquire the experience to recognize problems early, learn how to appropriately respond, and learn how to balance environmental regulations with maintenance protocols.
Related Recommendations (3)
R2
After identifying the necessary funding, the County reclamation districts should collaborate in establishing and supporting a shared website, possibly approaching one of the Districts that already has a website to take the lead. This website should include “Best Practices”, a calendar of date- or seasonal-specific tasks, such as preparation for nesting season when certain work is prohibited, and dates when Subventions Program applications are due, and a common log of significant levee incidents to identify and track historical trouble spots.
R3
After identifying the necessary funding, the County reclamation districts should consider taking turns hosting a short, local, annual conference for all District Board members and staff. Each conference should include an educational presentation on a matter of common interest, such as changes in regulations or levee standards, new technology or procedures for levee work, new sources of funding, and/or most effective techniques for successful grant applications.
R4
After identifying the necessary funding, reclamation districts should consider adding a “training module” for new and re-elected Board members to their required governance training (i.e. Brown Act and Ethics). This “module” or session should cover the district’s levee regulations and protocols, the consequences of noncompliance with regulations and protocols, flood preparedness, and emergency response training – or at minimum a “back to basics” session with the consulting engineer to cover these concerns.
F12
Levee management requires recognizing seasonal timeframes and juggling multiple deadlines, including preparing for storm season and the “no-mowing” period, when local bird populations nest, as well as timely application for the subvention and/or special projects funding programs.
Related Recommendations (1)
R2
After identifying the necessary funding, the County reclamation districts should collaborate in establishing and supporting a shared website, possibly approaching one of the Districts that already has a website to take the lead. This website should include “Best Practices”, a calendar of date- or seasonal-specific tasks, such as preparation for nesting season when certain work is prohibited, and dates when Subventions Program applications are due, and a common log of significant levee incidents to identify and track historical trouble spots.
F13
Unpermitted encroachments can hinder visual inspection of the levee surface and create new structural weaknesses or potential conduits for seepage.
No recommendations for this finding
F14
Education about the potential danger of unpermitted encroachments can be a highly effective management tool for mitigating this type of hazard because increased understanding of the potential consequences of such encroachments can support longer-term adherence to levee regulations and protocols.
No recommendations for this finding
F15
Since early recognition of potential trouble spots and prompt repair work are critical to maintaining levee integrity, while resources for levee patrols are limited, the presence of an educated and aware residential population can supply additional eyes to provide the constant vigilance that is crucial to safeguarding the levees.
No recommendations for this finding
F16
In addition to permitting procedures and intermittent newsletters, there are other opportunities to educate the public, and especially residents of reclamation districts, about the hazards that can damage or impair the levees.
Related Recommendations (2)
R8
After identifying the necessary funding, the Board of Supervisors should consider directing the County Planning Department to provide each applicant for new construction or major remodeling in unincorporated areas within a reclamation district with a brochure or direction to an online website explaining levee safety rules and regulations, along with the reasons for same, applicable to their particular reclamation district and to require that each applicant confirm receipt of the brochure or link to website by initialing.
R9
The Oakley City Council should direct the Oakley Planning Commission to provide each applicant for new construction or major remodeling within a reclamation district in the City of Oakley with a brochure or direction to an online website explaining levee safety rules and regulations, along with the reasons for same, applicable to their particular reclamation district and to require that each applicant confirm receipt of the brochure or link to website by initialing.
F17
Explaining the hazards to levees by multiple means at appropriate times -- i.e., just before the start of storm season in the fall – can help to keep awareness at a heightened and effective level.
Related Recommendations (2)
R8
After identifying the necessary funding, the Board of Supervisors should consider directing the County Planning Department to provide each applicant for new construction or major remodeling in unincorporated areas within a reclamation district with a brochure or direction to an online website explaining levee safety rules and regulations, along with the reasons for same, applicable to their particular reclamation district and to require that each applicant confirm receipt of the brochure or link to website by initialing.
R9
The Oakley City Council should direct the Oakley Planning Commission to provide each applicant for new construction or major remodeling within a reclamation district in the City of Oakley with a brochure or direction to an online website explaining levee safety rules and regulations, along with the reasons for same, applicable to their particular reclamation district and to require that each applicant confirm receipt of the brochure or link to website by initialing.
F18
Efforts to educate and raise public awareness could be enhanced by cross- departmental and/or cross-agency cooperation such as including Flood Control safety bulletins with other seasonally appropriate, apt-to-be-read or mandatory mailings such as property tax bills or voter information packets.
Related Recommendations (2)
R6
After identifying the necessary funding, the County Tax Collector should consider including informational material on flood preparedness or levee safety precautions, available at no charge from our County Flood Control or Central Valley Flood Control Agency or DWR, with every property tax bill that has an address within a reclamation district.
R7
After identifying the necessary funding, the County Clerk Recorder should consider including informational material on flood preparedness or levee safety precautions, available at no charge from our County Flood Control or Central Valley Flood Control Agency or DWR, with election materials sent to addresses within a reclamation district.
F19
It takes nearly 2 years from the application date for reclamation districts to receive reimbursement for levee maintenance work approved by DWR under the Subventions Program.
Related Recommendations (1)
R13
After identifying the necessary funding, the Board of Supervisors should consider directing the County’s Transportation, Water, and Infrastructure Committee to establish a task force to investigate possible ways for the less-advantaged reclamation districts to obtain interim funding, including but not limited to grants or low-interest rate loans, to cover the initial two-year lag-time to obtain reimbursement for essential levee maintenance work from the Subventions Program.
F20
The cost of the initial funding required of reclamation districts under DWR’s Subventions Program can be prohibitive for some reclamation districts, resulting in under-utilization of this highly beneficial program.
Related Recommendations (1)
R13
After identifying the necessary funding, the Board of Supervisors should consider directing the County’s Transportation, Water, and Infrastructure Committee to establish a task force to investigate possible ways for the less-advantaged reclamation districts to obtain interim funding, including but not limited to grants or low-interest rate loans, to cover the initial two-year lag-time to obtain reimbursement for essential levee maintenance work from the Subventions Program.
F21
Some reclamation districts that are unable to maintain the staff, equipment, and material stockpiles needed for emergency major repairs, rely on informal mutual- aid arrangements.
Related Recommendations (1)
R5
Reclamation districts should formalize, or at a minimum document, all “Mutual Aid” agreements for future reference as reclamation district personnel change over time.
F22
Planning agencies can require that developers who seek to develop areas within reclamation districts financially contribute to existing levees as a condition of approval of their proposed developments, as was done with the East Cypress Corridor Plan for residential development in the interior of Hotchkiss Tract, Reclamation District 799.
Related Recommendations (2)
R10
The Board of Supervisors should consider directing the appropriate planning and/or land use departments to follow the precedent established by the East Cypress Corridor Project and condition approval of proposals for new residential or commercial development, where allowed on any unincorporated County land in a reclamation district, on financial support of the existing levees.
R11
The City of Oakley should consider following the precedent established by the East Cypress Corridor Project and conditioning approval of proposals for new residential or commercial development, where proposed on Oakley’s annexed land in a reclamation district, on financial support of the existing levees.
F23
The feasibility of interagency cooperative ventures to accomplish levee improvements has been demonstrated by multi-agency coalition for to improve the levees in Reclamation District 2028, Bacon Island.
Related Recommendations (1)
R12
After identifying the necessary funding, the Board of Supervisors should consider directing the County’s Transportation, Water, and Infrastructure Committee to establish a task force or initiate a staff study to investigate ways to encourage and facilitate grant-seeking coalitions of urban water agencies and/or other beneficiaries of the levee system, on smaller-scale projects with shorter time horizons than those currently being investigated by the Delta Protection Commission (i.e. similar to but including even smaller-scale projects than the Bacon Island improvement coalition).
Agency Responses 7
Government agencies' official responses to this report's findings and recommendations. Click on a response to see the structured breakdown.
No Responses Found 3
Government entities assigned to respond to this report. No response documents have been linked in our database.
Contra Costa County Board of Supervisors
Elected County Office
Contra Costa County County Clerk-Recorder
Elected County Office