WMOD00003

• Applicant: Water Resources Development Corporation
• Sponsor Name: Cedaredge
• Project Name: Grand Mesa
• Title: A Report on Winter 1977 Cloudseeding Operations in the Grand Mesa, CO Area ‎(C-21)‎ and Summary Report on Five Seasons of Operations
• Date: 11/30/1977
• State: CO
• Country: United States
• Weather Modification - Doc Type: Report

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C()"lFOSITE OF FIVJ, YEMiS OF CLOUDSEF.DING OPERATIONS

l'loathor nodification (clouct~eeding) operCltions have been conducted

by ,later iiesourccG Development CerjJoration over the Grand Mesa area

of ColorCldo for ITIClllY yeCll'~ "ince' the eClrly 1')60' G. These operations

lIor,' senerally cClrried out bet\/Cen January cUld May on behalf of the

GI'321d 1.1esa I'later lJ sers ASCiociation.

The pr.Ln,ary pw'pose of these programs WCl~ to increase precipitation
over the Mesa ~rith the intention of improving runoff into the num-
erous \iater storage reservoirs. This report summarizes the results
from the programs carried out in the rive most recent years of ope~
ation (l '171, ~l')?2, 1975, 1976, 19'7'7). OjJerati ons ~l8re not conducted
in 1 '773 or 1 '37;', The decbion not to beeu dw'ing those years was
mnue by the Grauu Mesa lvater Users AssoclCltion in consultation with
\vatel" !leGow'ceG Developm'''TL Cor] ol'Cltion anu vias based on the then
current :"';IlOHp~ICk cOll...ll tion:.:; OVl~l' the t>~l'~;:J.

Follm:i11"; i c c\ . wmnary of the nWllber of uays and hours on \-Ihich
~leaLhel' modifications Here conducteu (luring each year:

NU. OF' DAYS HOURS
?ERIGL OF OP]';'lA'rlor'iS OFEilATED OPEilATED
17 Feb. - 1'0 ~by 1'11l r,) 961:00
~,.
15 Feu. - 15 "by 1972 59 1210:00
24 Jan. - 23 AjJril c'175 69 1693:45
24 Jun. - 2) April 1976 51 1455:00
21 J;Ul. - 2;~ 11ay 1'1T1 ..n. 2099:45
TOTAl. JC;I.. 71,19:30

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