MT · rules
Mont. Water Right Claim Examination R. 4
Standard Measurements of Water
Rule 4(a). Converting measurements. The department will
use the following conversions in determining equivalent flow rates
and volumes:
(1) forty (40) statutory or miner's inches equals 1.0 cubic
foot per second (cfs);
(2) one (1) miner's inch equals 11.22 gallons per minute
(gpm);
(3) one (1) cubic foot per second (cfs) equals 448.8 gallons
per minute (gpm); and
(4) one (1) acre-foot of water equals 325,851 gallons.
Rule 4(b). Units of water measurement. The decree
abstract and the department's summary report to the water court
shall identify units of water measurement in compliance with § 85-
2-103, MCA, as follows:
(1) for flow rates:
(i) less than one (1) cfs will be in units of gallons per
minute;
(ii) equal to or greater than one (1) cfs will be in units of
gallons per minute or cubic feet per second, as claimed or based
on the customary reference for the method of diversion;
(2) volumes will be in acre-feet or gallons.
Provenance
- Source
- courts.mt.gov
- Retrieved
- 2026-09-15
- Edition
- 2026-09-15
- Content hash
53a5e8fd7b9dd0db51f17e42e7086e2fa790d54458b5a07f11be7e4208d3a63b
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