14d

• Board Meeting Date: 9/17/2008
• Description: Director's Report - CWCB Director
• Board Meetings - Doc Type: Memo

SOUTH PLATTE DECISION SUPPORT SYSTEM (SPDSS): North Park IBCC Roundtable is
continuing to work with Jackson County and the CWCB on implementing a surface water model in the
basin. Participants have had several meetings with the SPDSS contractor to better define irrigated lands at
the farm or ranch level and sources of water that are used to irrigate lands. The people of Jackson County
are still enthused and are still actively participating in making this process a success. We have met with
the Stream and Lake Protection section staff on how this modeling effort can be used to help both Jackson
County and the staff better understand the hydrology of the basin; further meetings are anticipated. It is
expected that the work will be completed by December, 2008.
The SPDSS effort is moving forward with all existing contractors being under contract to complete the
final phase of their efforts. Alluvial groundwater modeling is moving forward into the calibration phase of
that effort, with a final calibrated alluvial groundwater model being done in early 2009. Future SPDSS
updates will continue to be posted in the SPDSS newsletter and announced on both the CWCB and CDSS
websites. Since the groundwater modeling is near completion, the State DSS team will begin to finalize
the surface water model scope of work and begin the advertising and selection process this fa1L (Ray
Alvarado)
PLATTE RIVER RECOVERY IMPLEMENTATION PROGRAM: The Platte River
Recovery Implementation Program continues to make incremental progress and the next Governance
Committee meeting is set for Kearney, Nebraska on October 7-8, 2008. The G.C. held the August
meeting in Scottsbluff, Nebraska. Currently there is one outstanding Request for Proposals ("RFP")
regarding Geomorphology and Vegetation monitoring. These RFPs are due on September 26, 2008. For
more information please visit: www.platteriverprogram.org. (Ted Kowalski)
SOUTH PLATTE O&M IN PROGRESS: Pursuant to the agreements between the U.S. Army
Corps of Engineers (Corps) and the CWCB, the CWCB owns land along the South Platte River and
operates and maintains what is considered a flood control reach of the South Platte River. This reach is
from Coal Mine Avenue to Oxford Avenue in Littleton, Sheridan, and Englewood. The reach was
straightened and armored with rock to accommodate high flood flow releases from Chatfield. Years of
annual inspections have named the Project "minimally
acceptable". The Omaha District Flood Readiness
Branch of the Corps oversees the project and is
requiring all vegetation in the river channel (defined as
top of slope down to the water surface) be removed by
2010 or the project will be rated as "unacceptable".
This rating could take the Project out of the public flood
eligibility assistance program and could impact local
floodplain maps, which could result in undesirable
floodplain management and insurance ramifications. In
2007, a 50/50 cost share agreement was developed
between the CWCB and the Urban Drainage Flood
~.
~' q ~~ ,,H
.
~_ ,~~~~
~. ~u
r ~ .r
r ,4
~~~~~~
~,
r 9
Control District. Using UDFCD contractors a total of $1 OOK of combined funding was spent in 2007 and
2008 removing vegetation on sandbars and cleaning culverts. The primary remaining task is removing
vegetation along the banks that could impact the 100-year flood event The CWCB will work on this task
using contractors without any UDFCD assistance. The CWCB has recently issued two $25K Purchase
~~~~ 20 ,w
~,