BOARD02334

• Board Meeting Date: 3/29/1999
• Description: Flood Section - Cooperating Technical Community ‎(CTC)‎ Agreement Between FEMA and Urban Drainage and Flood Control District - Relationship to CWCB Floodplain Designations and Approvals
• Board Meetings - Doc Type: Memo

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"judging the reasonableness of District hydrology", in other words, how to compare District
flows to some agreed-upon standards for acceptable flows.

4. How will the CTC agreement assure compliance with the CWCB's Rules and Regulations?

Currently FEMA's study process includes no specific procedure beyond coordination meetings
and submittal of copies of draft study documents for CWCB comment to involve the CWCB in
the preparation of Flood Insurance Studies. There is no formal agreement that studies will
comply with the CWCB's Rules and Regulations. Generally, when the CWCB has made
requests and suggestions for corrections/revisions, they have been honored by FEMA and its
consultants. It is assumed that the same would be true with Urban Drainage, an agency with a
long history of coordination and cooperation with the CWCB.

It is recommended that in the future, all FEMA study contracts include a specific schedule of
review mileposts:

a) hydrology,
b) topographic mapping,
c) selection and calibration of hydraulic models and procedures,
d) preliminary hydraulic results,
e) floodplain delineations, and
f) final draft of full report and maps.

Formal meetings could be held at three important points in the study process:

Study Point 1
Study Point 2
Study Point 3

The end of mileposts a), b) and c);
The end of mileposts d) and e);
The end of milepost f).

Requiring verbal endorsement by FEMA, the CWCB, the local govemment(s), and the study
contractor (including Urban Drainage) at each milepost would involve all affected parties at each
critical step in the study process. Such a mechanism would not require the CWCB's signature in
the CTC agreement, but it would ensure that aU parties, including those not signing the
agreements, knew when each step in the study was to be completed and knew that each party was
involved in reviewing the work. That would assure the CWCB that at each step compliance with
its Rules and Regulations was being considered.

5. What action is required by the CWCB?

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The CWCB staff should review the draft CTC agreement that has been provided by
FEMA. Comments should be discussed with FEMA and Urban Drainage. The final
language in the agreement should be reviewed by the CWCB.
The CWCB should complete its process of reviewing designation procedures relating to
"future conditions" hydrology and discuss it with FEMA and Urban Drainage for their
concurrence.

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