New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 2100 - WATER CONSERVATION; USE REGISTRATION AND REPORTING
Part Env-Wq 2102 - WATER USE REGISTRATION AND REPORTING
Section Env-Wq 2102.12 - Open Channel Flow Measuring Devices
Current through Register No. 13, March 27, 2025
(a) When establishing stage-discharge relations for open channel measuring devices or structures, the distribution of open channel flow measurements shall be sufficient to establish a full range of values for the entire stage-discharge relation.
(b) Weirs used to make open channel measurements shall have a rating table, as follows:
(c) A water user who produces hydroelectric power shall:
(d) The department shall accept methods
described in "Water Measurement Manual, A Water Resources Technical
Publication, A Guide to Effective Water Measurement Practices for Better Water
Management," United States Department of the Interior, Bureau of Reclamation,
Third Edition, 1997, Revised Reprint 2001, available on-line at no charge at
(e) If the measuring system has no continuous stage recorder, an observer shall read the staff gauge and record the reading as close in time as practical before and after changes in regulation of flow occur.
(f) The measuring system shall be installed or constructed in accordance with the specifications of the manufacturer or designer.
(g) For open channel measuring devices:
#9279, eff 9-24-08