BOARD02468

• Board Meeting Date: 5/22/2000
• Description: Flood Section - Rio Grande Basin - Rio Grande Headwaters Restoration Project
• Board Meetings - Doc Type: Memo

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descriptions of alternative strategies for addressing those areas where river condition
is deemed to be unsatisfactory,

a recommended overall plan for addressing sub-reaches of unsatisfactory fiver
condition, and

recommendations for a river monitoring program.

GIS maps will provide electronic information in graphic form to support and supplement the
reports. The final GIS maps will be housed and maintained at the San Luis Valley GIS/GPS
Authority.

Rio Grande ComDact

One important question arose during the scoping process. That question is, "How is the Rio
Grande Compact to be addressed as part of this project?" With input from DWR Division
Engineer, Steve Vandiver, and from Randy Seaholm, a memo was drafted to answer that
question. The memo was provided to all of the consultants. A portion of that memo is provided
below:

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"What is Given and Beyond Negotiation

The index and monitoring stations and the delivery requirements are set. by the
schedules outlined in the compact. We cannot propose different delivery amounts
of water. We cannot propose that the Colorado Division of Water Resources set
different curtailments or restrictions on water users in the San Luis Valley. The
volume of water that must be left in the river for New Mexico and Texas are not
part of the scope of this study.

What is Within the Scope of This Study

As you saw on last Monday afternoon's field trip, there are locations on the river
where there will be problems with erosion, deposition, channel migration and/or
overbank flooding if some particular flow threshold is exceeded. We are
concerned that some locations may face such problems when requirements of the
compact call for flow down the river to exceed such a threshold. We want to
learn where, if anywhere, those river locations are and what the problems

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