Tex. Government Code § 403.101

(a) The comptroller may receive and give a receipt for money due or payable under 33 U.S.C. Section 701c-3 (1986). The money shall be placed in a separate account called the flood area school and road fund to the credit of the comptroller. The money may not be part of the general funds of the state.

(b) Each person having the duty to collect school or road taxes for a school district, county, or other political subdivision all or part of which is within a flood control district or flood control area created or designated under law shall prepare and file with the comptroller a sworn report showing:

(1) the total number of acres acquired by the United States for flood control purposes within the boundaries of the school district, county, or other political subdivision; and

(2) the tax rate for each $100 of valuation for school and road purposes levied by the school district, county, or other political subdivision for the year in which the report is made.

(c) On or before September 15 of each year the comptroller shall pay to a school district, county, or other political subdivision the proportionate share of money in the flood area school and road fund that was produced by leases on land acquired by the United States for flood control purposes within the school district, county, or other political subdivision. The school district, county, or other political subdivision is entitled to a proportionate part of the money in the fund based on the ratio that the district's, county's, or subdivision's tax rate bears to the sum of the school tax rate and the road tax rate. The money may be used for the purposes permitted by federal law.

(d) If during a school year money distributable to a school district is in the flood area school and road fund, the comptroller, on application of a school district, may distribute the money on a date other than a date permitted by Subsection (c).