HomeMy WebLinkAbout09-10-25 Public Comment - D. Dennehy - Streams and WetlandsFrom:Derek Dennehy
To:Bozeman Public Comment
Subject:[EXTERNAL]Streams and Wetlands
Date:Tuesday, September 9, 2025 2:57:28 PM
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you
recognize the sender and know the content is safe.
Dear City Commission,
Thank you for taking the time to revise wetland and stream codes in the UDC. I am a Civil
Engineer working in Bozeman and the surrounding area. I have worked with several
different interests in regard to wetlands on both sides of the coin. This includes developers,
City engineers, Army Corps, etc. It is my opinion that the UDC can be revised to
simply/clarify the regulations involving streams/wetlands by formulating a science-based
approach to ensure that these valuable resources are managed appropriately.
In keeping with the Gallatin Watershed Council’s recommendations, I suggest the following:
1. Apply setbacks to all streams and wetlands, where setback widths are based
on best available science for maintaining ecological functions and values.
2. Complete an “aquatic resource delineation” to have an accurate map of
streams, wetlands, and irrigation ditches BEFORE lot lines, buildings, roads, and
parks are planned.
3. Clarify and strengthen departure, deviation, variance criteria for streams and
wetlands that allows for reduced setbacks where it is appropriate and necessary,
determined based on an “aquatic resource risk assessment.”
4. Take advantage of the similarities between streams and wetlands and make
their regulation as consistent as possible, instead of having two very different sets
of rules and processes.
I have seen firsthand how development can impact wetland areas. Dewatering wells can have a
harmful impact on wetlands, even if the development is unknowingly/unintentionally doing so.
In addition, departure from the use of minimum setbacks should require robust justification.
Thank you for your consideration and ensuring that Bozeman's great resources are present
for years to come.
Respectfully,
--Derek Dennehy