WMOD00263 ‎(2)‎

• Applicant: CWCB
• Sponsor Name: USBR
• Project Name: Response to RFP
• Title: Numerical Simulations of Snowpack Augmentation for Drought Mitigation Studies in the Colorado Rocky Mountains
• Prepared For: USBR
• Prepared By: Joe Busto, CWCB
• Date: 8/20/2003
• Weather Modification - Doc Type: Application

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CWCB Consultant

Mr. Curt Hartzell, CCM will be hired by the CWCB to assist Joe Busto in the program
management. He will coordinate project activities between the CWCB, the CSU research
team, and the Denver Water Department operational program's cloud seeding contractor,
WWC/Larry Hjermstad. As the project coordinator, he will closely oversee activities to
ensure that the program objectives are being achieved, and assist in the reporting task,
including the midterm project review meeting and the ending presentation. An important
task will be to work with Reclamation weather modification experts on technical reviews
of the proposed research study (solicitation sections C.5.2 and C.5.3). Mr. Hartzell
proposes to use about 1.0 month (176 hours) working for the CWCB on this project. This
effort will include participation in two project/Reclamation meetings in Colorado. Joe
Busto is requesting funding from both the CWCB and the DWD to cover Mr. Hartzell's
participation in the WDMP project as part of the 50-50 cost sharing requirement.

DWD Program Cloud Seeding Contractor

Mr. Larry Hjermstad/WWC as the DWD program Cloud seeding contractor will
participate in the proposed research on a daily basis during the 2003-2004 winter season.
They will use the model precipitation accumulation estimates received from the CSU
team in their cloud seeding decision making. WWC will then provide the CSU team with
specifics on their cloud seeding operations (generators used, times of generator
operations, and generator seeding rates from which ice nuclei outputs will be calculated).

As part of their contract with the DWD, WWC will make estimates of seeded
precipitation increases for all of the seeded events conducted during the Denver Water
Department Program's operational season. These estimates of the seeded and non-seeded
component of the observed precipitation amounts will be derived from the Seeding
Response Model developed by WWC based on the research results from the Colorado
River Basin Pilot Project and the Vail Seeding Program's evaluations. Also, these
estimates will be for the same precipitation measurement sites that the RAMS is
providing forecasts for both seeded and non-seeded precipitation amounts. Larry
Hjermstad will then use these data from the WWC procedure for estimating the increased
amount of precipitation from cloud seeding, and compare these estimates with those from
the RAMS runs. These precipitation estimates will also be made available to the CSU
team and the CWCB for their use in project comparison analyses. This effort requires
about two weeks of time throughout the seeding operating season and will also become
part of the Final Operations Report submitted to the Denver Water Department as part of
their WWC Contract. This work, as well as the operational cloud seeding, will be funded
by the DWD, as part of the 50-50 cost sharing requirement.

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