New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wt - Wetlands Programs
Chapter Env-Wt 600 - COASTAL LANDS AND TIDAL WATERS/WETLANDS
Part Env-Wt 603 - ADDITIONAL APPLICATION INFORMATION FOR PROJECTS IN COASTAL AREAS
Section Env-Wt 603.08 - Water Depth Supporting Information Required

Universal Citation: NH Admin Rules Env-Wt 603.08

Current through Register No. 13, March 27, 2025

(a) Using current predicted NOAA tidal datum for the location, and tying field measurements to NAVD 88, field observations of at least 3 tide events, including at least one minus tide event, shall be located to document the range of the tide in the proposed location showing the following levels:

(1) Mean lower low water;

(2) Mean low water;

(3) Mean high water;

(4) Mean tide level;

(5) Mean higher high water;

(6) Highest observable tide line; and

(7) Predicted sea-level rise as identified in the vulnerability assessment in Env-Wt 603.05.

(b) The following data shall be presented in the application project narrative to support how water depths were determined:

(1) The date, time of day, and weather conditions when water depths were recorded; and

(2) The name and license number of the licensed land surveyor who conducted the field measurements.

(c) For tidal stream crossing projects, provide water depth information to show how the tier 4 stream crossing is designed to meet Env-Wt 904.07(c) and (d), and for repair, rehabilitation, or replacement of tier 4 stream crossings, demonstrate how the requirements of Env-Wt 904.09 are met.

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