Marsh Run at Grimes water level

Name: Marsh Run at Grimes water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Marsh Run, Maryland, United States

Directions

Below flood stage

Water level

1.07ft Steady over the last 24 hours

Measured Oct 18, 2026, 07:15 AM EDT (23 min ago)

Flow: 6.3 cfs

History

7 days

Water level Minor flood stage

What this means

Marsh Run at Grimes is at 1.07 ft, in the normal range.

It is 4.93 ft below the flood stage of 6.00 ft.

It has barely moved over the past 24 hours. In the last month it has stayed between 1.02 ft and 1.12 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 4.45 ftFebruary 12, 1985

Floating and fishing near Marsh Run at Grimes

Normal flows mean predictable rapids and good access at most put-ins.

Flood stage here is 6.00 ft, 4.93 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

10.00 ft: Significant flooding is occurring, with homes, buildings, and roads flooded.
7.00 ft: Water covers the bridge on Sprecher Road near the camp entrance, and also covers the bridges upstream on Sprecher Road and Bakersville Road.
6.00 ft: Lowlands and fields on both sides of the river flood.
4.00 ft: Water begins to overflow the banks downstream of the gage, but there is no impact.
1.07 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Rank	Level	Date
1	4.45 ft	February 12, 1985
2	4.41 ft	February 26, 1979
3	4.10 ft	September 4, 2003

Weather at the gauge

Rain in the last 3 days: 0.21 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 59° 37° – Wind 5 mph

19 Mon 65° 37° – Wind 11 mph

20 Tue 67° 42° – Wind 14 mph

21 Wed 65° 40° – Wind 8 mph

22 Thu 67° 39° – Wind 10 mph

23 Fri 66° 42° – Wind 10 mph

24 Sat 61° 39° – Wind 10 mph

Forecast: Open-Meteo

Sunrise 07:25 AM Sunset 06:29 PM Daylight 11 hr, 4 min First quarter 49%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Rockymarsh Run at ScrabbleRiver gauge, Rockymarsh Run	1.04 ft	Below flood stage	−0.01 ft	3.6 mi
Antietam Creek near SharpsburgRiver gauge, Antietam Creek	2.42 ft	Below flood stage	−0.03 ft	5.1 mi
Potomac River at ShepherdstownRiver gauge, Potomac River	3.31 ft	Below flood stage	−0.05 ft	5.7 mi
Opequon Creek near MartinsburgRiver gauge, Opequon Creek	2.12 ft	Below flood stage	−0.12 ft	11 mi
Tuscarora Creek above MartinsburgRiver gauge, Tuscarora Creek	2.38 ft	Below flood stage	−0.02 ft	11 mi
Catoctin Creek near MiddletownRiver gauge, Catoctin Creek	1.64 ft	Below flood stage	−0.02 ft	13 mi
Hopewell Run at LeetownRiver gauge, Hopewell Run	1.5 cfs	Very low	−0.1 cfs	14 mi
Back Creek near Jones SpringsRiver gauge, Back Creek	1.98 ft	Below flood stage	−0.04 ft	14 mi

Questions and answers

What is flood stage for Marsh Run at Grimes?

The official flood stage is 6.00 ft. The level is currently 4.93 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Marsh Run at Grimes today?

On Oct 18, 2026, 07:15 AM EDT, the water level was 1.07 ft. Steady over the last 24 hours.

Is Marsh Run at Grimes rising or falling?

Steady over the last 24 hours.

Is the level of Marsh Run at Grimes normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Marsh Run at Grimes?

The highest level on record is 4.45 ft on February 12, 1985.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:01617800 (Agency page)
Coordinates: 39.51456, -77.77722 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	1.07 ft	2026-10-18 11:15	Provisional
Flow	6.3 cfs	2026-10-18 11:15	Provisional

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How to cite

U.S. Geological Survey: Marsh Run at Grimes (usgs:01617800). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/maryland/marsh-run-at-grimes

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer