Pub. L. 100-675, tit. II, sec. 206
PROTECTION OF EXISTING WATER USES.
SEC. 206. PROTECTION OF EXISTING WATER USES. As of the effective date of this Act, any action of the Secretary to use, sell, grant, dispose, lease or provide rights-of-way across Federal public domain lands located within the All American Canal Service Area shall include the following conditions: (1) those lands within the boundary of the Imperial Irrigation District as of July 1, 1988, as shown in Imperial Irrigation District Drawing 7534, excluding Federal lands without a history of irrigation or other water using purposes; (2) those lands within the Imperial Irrigation District Service Area as shown on General Map of Imperial Irrigation District dated January 1988 (Imperial Irrigation District No. 27F 0189) with a history of irrigation or other water using purposes; and (3) those lands within the Coachella Valley Water District’s Improvement District No. 1 shall have a priority for irrigation or other water using purposes over the lands benefiting from the action of the Secretary: Provided, That rights to use water on lands having such priority may be transferred for use on lands having a lower priority if such transfer does not deprive other lands with the higher priority of Colorado River water that can be put to reasonable and beneficial use.