Long Green Creek at Glen Arm

Last updated: Jul 6, 2025, 12:33 PM UTC
No watches, warnings or advisories are in effect for this area.

Flood Impacts 🅘

  • 15 - Multiple spots on Hartley Mill Road are flooded.
  • 11.5 - Glen Arm Road begins to flood.
  • 11 - Hartley Mill Road begins to flood in spots.

Gauge Info

Coordinates 39.4547, -76.4789
RFC MARFC
State MD
WFO LWX
County Baltimore
Data Provider(s)
US Geological Survey USGS--Water Resources of the United States
USGS 01584050

Gauge Location

Recent Crests

1. 4.89 ft on 11-01-2019
2. 4.50 ft on 11-24-2018
3. 4.93 ft on 07-27-2018
4. 6.43 ft on 02-24-2016
5. 5.21 ft on 06-27-2015

Historic Crests

1. 6.70 ft on 07-01-1984
2. 6.43 ft on 02-24-2016
3. 6.39 ft on 11-16-2006
4. 6.31 ft on 08-27-1978
5. 6.27 ft on 07-20-1989

Vertical Datum Table

type NAVD88
major Flooding 258.34 ft
moderate Flooding 253.34 ft
minor Flooding 250.34 ft
action 247.34 ft
Latest Value 244.40 ft
Gauge Zero 243.34 ft

Gauge Photos

No Images Found

Probability Information

No Images Available

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

WFO Information

Weather Forecast Office
(Baltimore/Washington) Sterling
43858 Weather Service Rd.
Sterling, VA 20166
Official Homepage