Section 15-2301. Legislative purpose

Section 15-2303. River improvement districts

Section 15-2305. River improvement associations

Section 15-2307. Construction contracts

Section 15-2309. Entry upon lands, structures and waters; acquisition of property

Section 15-2311. Financing of river improvements; assessment and collection of cost; correction and revision of assessments

Section 15-2313. Operation, maintenance, repair and extension of river improvements

Section 15-2315. Unlawful interference with improvement works

Section 15-2317. Construction of reservoir on state-owned lands in a forest preserve

Section 15-2319. Payment by the state of part of cost of river improvement

Section 15-2321. River improvement district with federal aid