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Welcome to the SEO's new website!

We hope you find it useful and more intuitive than our earlier site.  We intend to add functionality and detail over time.   Thanks, and let us know how we can get even better!

Patrick T. Tyrrell
State Engineer

The mission of the Wyoming State Engineer's Office and Board of Control is to provide for the general supervision and protection of both inter- and intra-state waters of Wyoming. This includes the appropriation, distribution and application to beneficial use of water as provided under the prior appropriation doctrine, and to maintain the flexibility within that framework to meet the changing needs of the citizens of Wyoming. The State Engineer's Office collects, analyzes, maintains and provides water related information for ensuring the appropriate management and regulation of Wyoming's water resources.