Interagency Task Force
A "White Paper" on Flood Plain Management Activities
California Floods of 1997
May 19,1997
EXECUTIVE SUMMARY
In the period of April and May 1997 there has been increasing concern related to how to best coordinate the efforts of PL84-99, a short term recovery program, with the long term vision of developing a more comprehensive flood plain management strategy for California, especially the Central Valley.
Considering discussions of the CALFED Policy Board, on May 13, 1997, the Interagency Task Force volunteered to hold a meeting to discuss how to move towards a more integrated process and address the long term vision. On May 14, 1997, a multi-agency group met and crafted a proposal to form a Flood Plain Management Working Group of the Interagency Task Force. The group further identified 8 critical issues that need addressing to allow for the successful implementation of the flood plain management initiative. The highest priority items dealt with the potential impacts on adjacent landowners that would result from implementation of a non-structural solution. This was closely followed by developing a better understanding of program authorities and funding that would allow for the implementation of both short term and long term strategies.
BACKGROUND
Record rains in December 1996 and January 1997 brought significant flooding to Northern California, especially the Central Valley. The reservoir and levee systems of the region passed record volumes of water, and unprecedented river stages in many of the major river systems. Flood damages were extensive including in excess of 80 levee failures in the San Joaquin, Sacramento, and other river basins. Most levee failures were related to the extended duration of flow in the rivers, the subsequent saturation and piping of flows under the levee and in some cases the ultimate collapse of the levee due to piping induced erosion of the subsurface of the levee.
In the weeks and months following the flooding, recovery strategies varied from the traditional approach of restoring in place all damaged infrastructure. Policy makers and citizens were asking basic questions related to methods of recovery and whether alternative flood plain management strategies such as non-structural alternatives should be considered for implementation.
While there are many factors influencing this change in philosophy there were several factors at the local and national level that led to the consideration of alternative strategies. Some of these factors include:
1993 Midwest flood experience and the success of non-structural strategies in reducing damages in 1995 flooding.
A general sense that many property owners in flood prone areas are becoming tired of living at risk and are open to non-structural strategies.
The publication of the White House Interagency Task Force Report, Sharing the Challenge: Floodplain Management into the 21st Century, commonly called the Galloway Report which in part urged the balancing of structural programs with non-structural strategies.
In response to these events several concurrent actions occurred, or were ongoing (see diagram) and include:

1. The Corps of Engineers initiating PL84-99 activities including the consideration of non-structural alternatives, with a deadline of having repairs or commitments to implement non-structural solutions by November 1, 1997.
2. White House/OMB/CEQ directives that required the formation of an Interagency Task Force (ITF), with the Corps of Engineers designated as the lead agency to coordinate restoration activities with a specific emphasis on non-structural alternatives (NSAs) under PL84-99.
3. CALFED recognition of the opportunity to integrate program activities into those non-structural alternatives accomplished under PL84-99 funding.
4. A general recognition that PL84-99 by design is limited in scope and can not be used as a tool to respond to a system-wide basin plan or study analysis.
5. On-going basinwide planning studies for:
I. Sacramento River Watershed Reconnaissance Study
II. Sacramento-San Joaquin Delta Special Study
III. The San Joaquin River Mainstem and Tributaries Study
IV. Small Community Flood Assessment Program
6. A desire by many to develop a system based plan, whether this is through a proposed Phase IV Comprehensive Study mechanism of the Corps of Engineers, individual basin studies as currently authorized, or through programs of other Federal and state agencies.
Throughout the recovery process it was apparent that for non-structural alternatives there was both a short term and a long term strategy. What was not clear however was integration of the short-term strategy, primarily the Corps’ PL84-99 program, with the long term strategies of implementing a broader flood plain management approach for Central California. During the CALFED Policy Board Meeting of May 13, 1997, there was clearly expressed a need to outline an overall vision that integrates the efforts of existing programs and/or studies. From those discussions the Interagency Task Force and the Corps of Engineers volunteered to hold a meeting to explore a broader vision of how to address the non-structural and flood plain management opportunities in the region. More specifically it was noted that many had ideas on projects that could be implemented, but there was not a clear vision of the structure necessary for successful implementation.
EXPLORATORY MEETING
A meeting was held on May 14, 1997, to brainstorm the need for a multi-agency coordinating group on non-structural and more specifically flood plain management issues. Participants included: Bureau of Reclamation, Fish and Wildlife Service, CALFED, DWR/Reclamation Board, Department of Fish and
Game/Wildlife Conservation Board, and the Corps of Engineers. The following is a consensus based problem statement, organizational structure, and listing of key issues that must be resolved to facilitate the implementation of flood plain management strategies. In addition, this paper provides for general discussion, analysis and conclusions with a recommendation to move forward.
PROBLEM STATEMENT
There is a need to develop a structure and mechanism to assure the successful and timely implementation of emergency actions under PL84-99, while integrating and developing the long term actions required to plan and recommend flood plain management solutions within the flood impacted regions.
STRUCTURE TO ADDRESS PROBLEM
Under the lead of the Interagency Task Force, a working group on flood plain management alternatives will be established. The Corps of Engineers, South Pacific Division and the California Resources Agency will co-lead this working group, with other agency representatives participating at their discretion. Recommendations of the working group will be sent forward to the full task force for review, comment, and action to address integration into existing programs. This flood plain management group may eventually replace the ITF.
ISSUES INITIALLY IDENTIFIED
The following issues were identified, and ranked for priority.
1. Impacts on adjacent landowners
2. Hydrologic and Hydraulic impacts of the "New Systems" both upstream and downstream of the damaged areas.
3. Land Rights vs. Regulation – how are the rights of the landowners protected and yet meet regulatory requirements.
4. Authorities – Full Examination Required
5. PL84-99 Timing -- Expectations
(Real estate transaction delays)
(Exposure to liability)
(Interim measures)
6. Funding – Sources Need to be Identified
7. Phase IV, COE GI studies and other agency studies/programs
GENERAL DISCUSSION
As the Flood Plain Management Work Group progresses with the initial issues identified, there must be a clear linkage between existing programs associated with flood plain management.
Those linkages must address:
One of the first efforts of the ITF-Working Group should be to review the existing Ad-Hoc Group’s report and those NSA proposals already presented to the ITF.
ANALYSIS AND CONCLUSION
There are many individual and agency ideas on what can be achieved in terms of non-structural alternatives to traditional levees. To date there has not been a mechanism to allow for the systematic appraisal of opportunities and a method to
define and resolve barriers that prevent implementation in the near and long term. The formulation of a Flood Plain Management Working Group of the
Interagency Task Force, will provide a forum to identify problems and develop recommended solutions. The participants concluded the May 14 meeting by identifying 8 initial issues with three distinctive groupings of priority. The highest priority items dealt with the potential impacts on adjacent landowners that would result from implementation of a non-structural solution. The second grouping dealt with authorities and funding for short term and long term implementation, and how to get a plan in place for a long term solution. The third grouping of priorities dealt with specific implementation, such as PL84-99, or with specific technical or management strategies to be applied in a given non-structural analysis.
While there is concern that the Interagency Task Force is really a short term task force, for now it provides a forum and mechanism to begin addressing the short term and long term issues. It is recognized that as the short term work of the ITF comes to a close it will be necessary to either expand the mission of the ITF or find a new policy level home for this working group.
The significance of the group recommendation that this working group be called the "Flood Plain Management Working Group" is very important. While the emphasis of the working group is very much on non-structural alternatives it allows for a broader vision of total flood plain management that includes flood protection and natural resource management strategies.
RECOMMENDATION
That the ITF-Working Group, hereby referred to as the "Flood Plain Management Working Group" is approved by the formal ITF. That the agencies making up the subgroup are committed to the pursuit of non-structural alternatives and other flood plain management strategies. That the Flood Plain Management Working Group begin to address the initial issues and review the Ad-Hoc Group’s report immediately in order for a determination to be made on those projects for which the July 1, 1997 is critical in restoration of flood protection by the next flood season.
ENCLOSURE - Authorities Matrix