Wyo. Stat. § 16-10-103 (2026)

(a) In addition to all other powers provided by law, any
governing body may establish a surface water drainage utility to
design, plan, construct, reconstruct, acquire, operate, improve,
extend or maintain a surface water drainage system, sometimes
referred to as a storm water drainage system. To carry out this
duty, any city or town may go beyond its corporate limits to
hold and acquire property by agreement. To carry out this duty,
a county may go beyond its boundaries to hold and acquire
property by agreement.

     (b) No construction relating to a surface water drainage
system shall be undertaken on property within the boundaries of
a governing body other than the governing body establishing the
surface water drainage system unless both bodies agree to the
construction.

     (c) In addition to other methods provided by law or
ordinance, and subject to voter approval as provided by W.S.
16-10-105(d), a governing body may issue revenue bonds and may
levy and collect service charges to finance the surface water
drainage utility. A surface water drainage utility may be
formed by the governing body of any city or town, or by the
county in the unincorporated area of the county, as provided by
this act, for all or a portion of the respective municipality by
its governing body, or for all or a portion of the
unincorporated area of a county by its governing body.

     (d) No action shall be undertaken which would interfere
with historical, appropriated or beneficial use of any Wyoming
water right.