Evaluating Community Infrastructure for Aquatic Organism Passage & Flood Resiliency

September 20, 2018 @ 1:00 pm – 5:00 pm
Antioch Universiy New England
40 Avon St
Keene,NH 03431

Presented by NHANRS & Antioch University New England


What aquatic organism passage and hydraulic vulnerability means to community infrastructure and associated wildlife?
This workshop outlines how road stream crossings [culverts] impact the movement of aquatic species as well as the transport of stormwater flows during more frequent and larger storm events. Aquatic Organism Passage (AOP) identifies whether aquatic animals such as fish, turtles or amphibians can pass through a stream crossing without obstruction. Culvert restrictions such as large vertical drops, water velocities, physical blockage, and the lack of natural substrate in a crossing all play a critical role. Ideally, culverts maintain a direct connection between the up- and downstream environment without major changes in slope or break in sediment continuity. Vulnerability of infrastructure is evaluated by modeling a culvert’s hydraulic capacity based on streamflow predictions. Results then help communities evaluate minimizing emergency repairs to infrastructure and maximize savings by proactively addressing restoration opportunities.


Colin Lawson joined Trout Unlimited (TU) in 2009 as the New England Culvert Project Coordinator (NECP).  His focus is on reconnecting Eastern brook trout habitat in priority New England watersheds through the removal, replacement or retrofit of currently impassable road stream crossings and other instream barriers.  Colin’s graduate work in environmental science concentrated on hydro-ecology at Antioch New England University in Keene, NH.  His thesis was on modeling the hydraulic
capacity of stormwater infrastructure.

Erin Rogers, Ph.D., F
ield and Research Manager for NECP, recently completed her doctoral degree at Antioch University New England during which time she studied the effects of Hurricane Irene and Tropical Storm Lee flooding on stream communities and the population dynamics of brook trout in the Delaware Water Gap National Recreation Area. Having joined Trout Unlimited’s New England Culvert Project in 2011, Erin now leads much of the field work in Vermont, western Massachusetts, and western New Hampshire.  She focuses on assessing the links between aquatic organism passage and flood vulnerability of bridges and culverts, then working with towns and other agencies to replace the worst structures.  She has also started to increase the number of in-stream habitat restoration projects as well as establish a new research and monitoring program for NECP.

Download the Aquatic Organism Passage & Flood Resiliency Flyer 092018 and mail in your registration or register online with  PayPal.