News & Announcements

FLOODING

Gallatin County Emergency Management provides comprehensive flood preparedness information, including how to prepare for and stay safe during a flood, and what do after the flood to care for your well and septic system.

Gallatin County Planning is currently working with the Federal Emergency Management Agency (FEMA) and Montana DNRC to update Flood Insurance Rate Maps for the West Gallatin River and Bozeman Creek and its tributaries.  The finalized maps may be used by lenders, insurance agents, county government, property owners, and developers to determine areas of flood risk.  Gallatin County GIS has put together an interactive map viewer of the update for visualization and planning (non-regulatory) purposes.  Users are advised that the interactive map may not align exactly with the official FEMA Flood Insurance Rate Maps, which will be used by lenders.

Current floodplain boundaries can be viewed on the Planning Department’s web mapper.  Please select one or more ‘FEMA layers’ in the upper right.  Layer display is scale-dependent.

ADVENTURE SCIENTISTS RELEASES MICROPLASTICS INITIATIVES FINAL REPORT

Bozeman-based Adventure Scientists has released a final report outlining the findings of their Global and Gallatin Microplastics Initiatives.  GLWQD was a member of the Gallatin Microplastics Coalition and provided guidance on project design and implementation for the project.  Microplastics, defined as plastic particles less than 5mm in size, are gaining attention as a contamination of concern in water bodies globally.  The Gallatin initiative surveyed microplastics contamination in the Gallatin River Watershed, and is the only watershed-scale study of microplastic pollution conducted with seasonal sample collection and over multiple years to date.  Read the report here.

DRAFT CHANNEL MIGRATION ZONE MAPS AND REPORTS COMPLETED FOR EAST & WEST GALLATIN RIVERS

Tony Thatcher of DTM consulting and Bozeman geomorphologist Karin Boyd have completed draft channel migration zone (CMZ) maps and reports for the East and West Gallatin Rivers.  CMZ mapping is based on the understanding that rivers are dynamic, moving laterally across their floodplains through time, and is a science-based tool that can be used to help the public, landowners, and decision makers develop an understanding of river dynamics, along with the inherent risks and benefits associated with those processes. The draft reports can be found here.

GALLATIN COUNTY EXTENSION COMPILES DROUGHT RESILIENCY REPORTS

Gallatin County Extension is now compiling Drought Resiliency Index reports for the Gallatin County region, reporting two current years of data from nearby NRCS SNOTEL sites and USGS stream gages and comparing it to longer term averages.  The reports also include the NRCS Surface Water Supply Index and the NOAA’s Drought Monitor maps.  Online reports, as well as printable PDFs can be found here.