25 C.F.R. § 171.225
What must I do to receive irrigation service to my subdivided farm unit?
In order to receive irrigation service, you must:
(a) Provide us a copy of the recorded plat or map of the subdivision which shows us how the irrigation water will be delivered to the irrigable acres;
(b) Pay for any extensions or alterations to our facilities that we approve to serve the subdivided units;
(c) Construct, at your cost, any facilities within your subdivided farm unit; and
(d) Operate and maintain, at your cost, any facilities within your subdivided farm unit.