ISF Rulemaking 2016-2018

Instream Flow Program Rules
Env-Wq 1900
Rules for the Protection of Instream Flow on Designated Rivers

Following the completion of the Instream Flow Pilot Program on the Souhegan and Lamprey Designated Rivers, NHDES revised the rules to apply instream flow protections to the other Designated Rivers of the State, as required by RSA 483. For information about the Instream Flow Program please visit the ISF Webpage.

Current News:

Proposed Instream Flow Rules – Env-Wq 1900 are available for public comment until November 26, 2018 at 4:00 pm.


Deadline for Written Comments: Monday, November 26, 2018 (4:00 PM)

Contact: Wayne Ives, Instream Flow Specialist
NH Dept. of Environmental Services
29 Hazen Drive; P.O Box 95
Concord, NH 03302-0095
Phone #: (603) 271-3548
Fax #: (603) 271-7894

NHDES held a public hearing on November 15, 2018 to accept public comment on the proposed Instream Flow Program Rules Env-Wq 1900 to be amended. The primary changes are: (1) application of the existing requirements to all designated rivers; (2) incorporation of the 2016 changes to RSA 483; (3) a description of the public process for prioritizing and selecting rivers for instream flow implementation; (4) deletion of the existing water conservation requirements and, instead, incorporation by reference of the water conservation plan requirements in Env-Wq 2101; and (5) identification of additional categories of stakeholders for notification and participation in the process. The proposed rules are streamlined and significantly reorganized for clarity. The hearing was held in Conference Room 208C of the NHDES offices at 29 Hazen Drive, Concord, NH.

The Initial Proposal – Fixed Text and Rulemaking Notice were published in the Rulemaking Register on Thursday, October 25, 2018.


Past Rulemaking Public Meeting Announcements and Documents:

Meeting 1

Meeting 2

Meeting 3

Meeting 4

Meeting 5

ISF Rulemaking Resources:

Instream Flow Pilot Program Report (December 2015)  – Results and recommendations of the ISF Pilot Program
Instream Flow Pilot Program Report (December 2015) – APPENDICES

RSA 483 – Rivers Management and Protection Program statute (includes Instream Flow Program)

2011 Instream Flow Pilot Rules – Existing rules governing the ISF pilot program