Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Carter County, Montana. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
4 NOAA storm reports from Carter County describe what happened, in the words of the forecasters who covered it. Read the Montana flood stories →
8 federal disaster declarations since 2000.
| Disaster | Began |
|---|---|
| Severe Storms, Straight-line Winds, And Flooding | Aug 21, 2014 |
| Severe Storms And Flooding | Apr 4, 2011 |
| Severe Winter Storm | May 1, 2008 |
| Hurricane Katrina Evacuation | Aug 29, 2005 |
| Severe Winter Storms | Oct 31, 2000 |
| Wildfires | Jul 13, 2000 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
12 since 1996: 6 flash floods and 6 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flood | Mar 25, 2019 | — |
| Flash Flood | Jul 21, 2019 | — |
| Flash Flood | Jul 5, 2019 | — |
| Flood | Mar 9, 2014 | — |
| Flood | May 20, 2011 | $320,000 |
| Flash Flood | Jun 20, 2010 | — |
| Flood | Apr 14, 2009 | $80,000 |
| Flash Flood | Jun 2, 2008 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flood · Mar 25, 2019. Flooding occurred across many areas of south central and southeast Montana during the latter portions of the month. A considerable snow cover existed through the month. Surface and sub-surface ground temperatures remained frozen through the last week of March. Warming temperatures resulted in this snow to quickly melt. Widespread flooding occurred due to the snow melt not being able to soak into the ground. In ad…
Flash Flood · Jul 21, 2019. A slow moving thunderstorm produced 3.70 inches of rain in a short period of time which resulted in some flash flooding.
Flash Flood · Jul 5, 2019. Very heavy thunderstorms moved across portions of southeast Montana during the afternoon and early evening hours of the 5th. Rainfall anywhere from 1 to 6 inches was reported across this area. In addition, large hail also occurred with a few of these thunderstorms. The rain and hail combined resulted in flash flooding across some areas. One location had a few basements flooded, but otherwise, besides water over ro…
Flood · Mar 9, 2014. After a very cold winter resulting in area rivers, streams and creeks freezing, early March began with some heavy snow followed by a rapid warm-up. This warm-up resulted in snowmelt and ice-jam flooding over area rivers, creeks and streams that continued into the middle of the month. While many areas experienced flooding, the locations that were most impacted by flooding included Park County, areas along the Musse…
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Carter County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.