"cloud seeding" in USASpending.gov database shows $5.3 Million dollars of contracts and grants.
This 2023 grant to Southern Nevada Water Authority references ground based cloud seeding and remote generators:
"In 2018, agencies within the seven basin states entered into a programmatic funding agreement where the lower basin entities, and New Mexico, cooperatively have funded weather modification projects managed by the Colorado water conservation board, Utah division of water resources, and Wyoming water development office (upper basin entities)
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While cloud seeding is a non import environmentally safe method, for creating additional water inflow into the Colorado River system, further research is needed to determine whether this can meaningfully support the water needs of the Colorado river basin, local communities, and ecosystems. This agreement will continue to enhance, implement, and monitor aerial and ground based cloud seeding projects by targeting key snowpack areas in the upper Colorado river basin.
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This agreement is expected to enhance the projects by changing existing manually operated cloud seeding generating equipment to new technology that includes remotely operated generators…"
https://www.usaspending.gov/keyword_search/%22cloud%20seeding%22
https://www.usaspending.gov/award/ASST_NON_R23AP00118_014