National Weather Service Advanced Hydrologic Prediction Service

weather.gov

Home

News

Organization

Search by city or zip code. Press enter or select the go button to submit request

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
User Guide
User Brochure

What is AHPS?
Facts
Our Partners

Feedback/Questions
Provide Feedback
Ask Questions

This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

About this graph

Forecasts for the Antietam Creek near Sharpsburg are issued routinely year-round.

Return to Area Map

Zoom Level:14

Flood Categories (in feet)

Major Flood Stage:	12
Moderate Flood Stage:	10
Flood Stage:	8
Action Stage:	7
Low Stage (in feet):	0

Historic Crests
(1) 16.73 ft on 07/20/1956
(2) 14.71 ft on 09/26/1975
(3) 14.30 ft on 06/23/1972
(4) 13.71 ft on 01/19/1996
(5) 11.90 ft on 07/11/1928
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.21 ft on 05/16/2014
(2) 9.89 ft on 10/31/2012
(3) 8.39 ft on 04/29/2011
(4) 8.63 ft on 04/17/2011
(5) 9.68 ft on 04/17/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.43 ft on 08/01/1974

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
15	Water reaches the top of the arch of the Old Burnside Bridge at Antietam National Battlefield and the treeline near Old Burnside Bridge. Water also approaches the parking lot of the Pry House Medical Museum.
12	Water approaches outbuildings off Harpers Ferry Road near Sharpsburg. Significant flooding of low-lying fields near the creek is occurring.
10	Land near the creek through Antietam National Battlefield is flooded. The lower portion of a driveway adjoining the creek near Route 34 is flooded. Floodwaters approach at least one home on the left bank near Route 34.
9	Water approaches the lowest corner of the Old Burnside Bridge. Burnside Bridge Road and Manor Church Road are flooded and closed, and trails alongside the creek in Antietam Battlefield are flooded.
8	A low spot on Burnside Bridge Road, on the south end of Antietam National Battlefield, begins to flood. Flooding on the battlefield along the creek is also occurring, flooding some creekside trails and nearby land. A few small monuments near Burnside Bridge become surrounded by water. Fields off Branch Avenue in Sharpsburg begin to flood.
7	Water begins to overflow the banks on both sides in Antietam National Battlefield. Water approaches the low spot on Burnside Bridge Road on the far southern end of the battlefield.

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Sharpsburg

Additional Information

Potential River Levels - Used to

Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS)	7 Day (NAEFS)	7 Day (GEFS)

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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.

NWS Information

National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(571) 888-3500
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM

Disclaimer
Credits
Glossary