16 USC § 695o
Limitation on reduction of areas by diking or other construction
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283
The areas of sumps 1(a) and 1(b) in the Klamath project lying within the Executive order boundaries of the Tule Lake National Wildlife Refuge shall not be reduced by diking or by any other construction to less than the existing thirteen thousand acres.