BOARD00143

• Board Meeting Date: 11/25/2002
• Description: CF Section - En-Bloc Non-Reimbursable Investment Recommendations CWCB/Division of Water Resources Satellite Monitoring System
• Board Meetings - Doc Type: Memo

Proiect Estimated Cost
Acoustic Doppler Current Profiler (ADCP) and Velocity Meter project. $ 74,000
This project will be designed to test the feasibility of new technologies to improve the
frequency, reduce the effort, and potentially improve the accuracy of flow measurements at
stream gaging stations. ADCP is a relatively new measuring system that provides rapid
multiple direct measurements, which would increase the ability to adjust discharge records to
meet the challenges of unstable conditions. Because the measurements can be made quicker,
more temporal coverage may be possible. The ability to rapidly perform multiple measurements
on each site visit also increases confidence in the measured flow.
Development of low flow statistics for a dronght impact analysis of selected gaging $ 25.000
stations. The objective of this study would be to examine the 2002 streamflows in a temporal
perspective. The USGS will conduct a low-flow frequency analysis to determine the severity of
the 2002 flows for a number of USGS and DWR gaging stations throughout the state.
Streamflow records from USGS and DWR gaging stations would be analyzed to examine the
severity of the 2002 flows (e.g., 1 OO.year recurrence) for several time periods (30.day, 60-day,
etc),
State of Colorado Stream Gaging Symposium. $ 2,000
In May of2001, the CWCB, USGS and DWR conducted a stream gaging symposium in order to
educate and cooperate with individuals and organizations interested in maintaining and
improving the collection and use of Colorado streamflow data. This request is to provide
funding for the CWCB' s portion of costs related to planning and sponsoring future
symposiums.
Implementation of Conductivity and Dye Dilution tracer methodologies to monitor $ 40,000
late season and winter flow conditions at two separate gages.
In FY 2001102 and FY 2002/03 the Finance Committee and the CWCB authorized staff to work
with the DWR and USGS to fund research projects for new tracer methodologies to monitor
late season and winter flow conditions, This project will implement the methodologies at two
Colorado gaging stations to provide critical winter low flow information. A potential site that is
currently being evaluated is the Officers Gulch staff gage which is used to monitor Copper
Mountain's comoliance with the 1986 DNR / Summit County Ski area agreements.
ISF low flow warning system utilizing existing satellite gages. $10,000
This is an on.project that was initiated in FY 2002. It involves coordination with the DWR and
USGS, as well as IT programming to automatically alert CWCB staff when low flow conditions
exist. A contractor has been hired and is currently working with DWR staff to develop the
system. This funding request is to further refine the capabilities of the system and provide for
its integration into the Instream Flow Decision Support System, which is concurrently being
developed.
Flood hardening and flood warning systems. $ 100,000
Over the past two years, CWCB, DWR and USGS staff began a process to upgrade gage
installations throughout the state so that they could continue to be operated and survive during
high flow events. This effort has been referred to as "flood hardening." Each year, gages from
a master list, that was developed in 20011 2002, will be evaluated on an individual basis and
funded for flood hardening through this program. In addition, flood.warning systems may be
implemented as part of this effort for at-risk communities. This is an ongoing joint request
between CWCB and DWR. The allocation of these funds for specific projects is managed
jointlv between the DWR and CWCB.
Update existing USGS gages with High Data Rate Satellite Monitoring equipment. $ 35,000
This proj ect entails updating approximately 5 USGS gages which are of interest to the CWCB
with High Data Rate Satellite Monitoring equipment. These gages are currently being operated
and maintained bv the USGS throuo:h their co.oo orograms, however the sites do not have

Flood Protection. Water Project Planning and Financing. Stream and Lake Protection
Water Supply Protection. Conservation Planning