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Hydrograph River at a Glance Download Inundation
Mapping
Swatara Creek at Middletown Stage (ft)Observed: 4.83 ft at 1:30PM May 14, 2022Observed: 4.81 ft at 1:45PM May 14, 2022Observed: 4.8 ft at 2:00PM May 14, 2022Observed: 4.81 ft at 2:15PM May 14, 2022Observed: 4.79 ft at 2:30PM May 14, 2022Observed: 4.81 ft at 2:45PM May 14, 2022Observed: 4.79 ft at 3:00PM May 14, 2022Observed: 4.8 ft at 3:15PM May 14, 2022Observed: 4.79 ft at 3:30PM May 14, 2022Observed: 4.79 ft at 3:45PM May 14, 2022Observed: 4.8 ft at 4:00PM May 14, 2022Observed: 4.77 ft at 4:15PM May 14, 2022Observed: 4.77 ft at 4:30PM May 14, 2022Observed: 4.79 ft at 4:45PM May 14, 2022Observed: 4.78 ft at 5:00PM May 14, 2022Observed: 4.77 ft at 5:15PM May 14, 2022Observed: 4.76 ft at 5:30PM May 14, 2022Observed: 4.77 ft at 5:45PM May 14, 2022Observed: 4.81 ft at 6:00PM May 14, 2022Observed: 4.81 ft at 6:15PM May 14, 2022Observed: 4.79 ft at 6:30PM May 14, 2022Observed: 4.79 ft at 6:45PM May 14, 2022Observed: 4.79 ft at 7:00PM May 14, 2022Observed: 4.78 ft at 7:15PM May 14, 2022Observed: 4.77 ft at 7:30PM May 14, 2022Observed: 4.76 ft at 7:45PM May 14, 2022Observed: 4.77 ft at 8:00PM May 14, 2022Observed: 4.77 ft at 8:15PM May 14, 2022Observed: 4.76 ft at 8:30PM May 14, 2022Observed: 4.76 ft at 8:45PM May 14, 2022Observed: 4.76 ft at 9:00PM May 14, 2022Observed: 4.75 ft at 9:15PM May 14, 2022Observed: 4.74 ft at 9:30PM May 14, 2022Observed: 4.76 ft at 9:45PM May 14, 2022Observed: 4.73 ft at 10:00PM May 14, 2022Observed: 4.75 ft at 10:15PM May 14, 2022Observed: 4.75 ft at 10:30PM May 14, 2022Observed: 4.75 ft at 10:45PM May 14, 2022Observed: 4.74 ft at 11:00PM May 14, 2022Observed: 4.74 ft at 11:15PM May 14, 2022Observed: 4.74 ft at 11:30PM May 14, 2022Observed: 4.75 ft at 11:45PM May 14, 2022Observed: 4.75 ft at 12:00AM May 15, 2022Observed: 4.75 ft at 12:15AM May 15, 2022Observed: 4.75 ft at 12:30AM May 15, 2022Observed: 4.74 ft at 12:45AM May 15, 2022Observed: 4.74 ft at 1:00AM May 15, 2022Observed: 4.74 ft at 1:15AM May 15, 2022Observed: 4.73 ft at 1:25AM May 15, 2022Observed: 4.73 ft at 1:30AM May 15, 2022Observed: 4.73 ft at 1:45AM May 15, 2022Observed: 4.74 ft at 2:00AM May 15, 2022Observed: 4.72 ft at 2:15AM May 15, 2022Observed: 4.73 ft at 2:30AM May 15, 2022Observed: 4.72 ft at 2:45AM May 15, 2022Observed: 4.72 ft at 3:00AM May 15, 2022Observed: 4.72 ft at 3:15AM May 15, 2022Observed: 4.7 ft at 3:30AM May 15, 2022Observed: 4.7 ft at 3:45AM May 15, 2022Observed: 4.71 ft at 4:00AM May 15, 2022Observed: 4.71 ft at 4:15AM May 15, 2022Observed: 4.71 ft at 4:30AM May 15, 2022Observed: 4.71 ft at 4:45AM May 15, 2022Observed: 4.69 ft at 5:00AM May 15, 2022Observed: 4.69 ft at 5:15AM May 15, 2022Observed: 4.69 ft at 5:30AM May 15, 2022Observed: 4.69 ft at 5:45AM May 15, 2022Observed: 4.7 ft at 6:00AM May 15, 2022Observed: 4.68 ft at 6:15AM May 15, 2022Observed: 4.69 ft at 6:30AM May 15, 2022Observed: 4.68 ft at 6:45AM May 15, 2022Observed: 4.69 ft at 7:00AM May 15, 2022Observed: 4.69 ft at 7:15AM May 15, 2022Observed: 4.7 ft at 7:30AM May 15, 2022Observed: 4.71 ft at 7:45AM May 15, 2022Observed: 4.7 ft at 8:00AM May 15, 2022Observed: 4.71 ft at 8:15AM May 15, 2022Observed: 4.73 ft at 8:30AM May 15, 2022Observed: 4.73 ft at 8:45AM May 15, 2022Observed: 4.73 ft at 9:00AM May 15, 2022Observed: 4.77 ft at 9:15AM May 15, 2022Observed: 4.77 ft at 9:30AM May 15, 2022Observed: 4.78 ft at 9:45AM May 15, 2022Observed: 4.8 ft at 10:00AM May 15, 2022Observed: 4.81 ft at 10:15AM May 15, 2022Observed: 4.8 ft at 10:30AM May 15, 2022Observed: 4.82 ft at 10:45AM May 15, 2022Observed: 4.84 ft at 11:00AM May 15, 2022Observed: 4.86 ft at 11:15AM May 15, 2022Observed: 4.86 ft at 11:30AM May 15, 2022Observed: 4.88 ft at 11:45AM May 15, 2022Observed: 4.88 ft at 12:00PM May 15, 2022Observed: 4.9 ft at 12:15PM May 15, 2022Observed: 4.92 ft at 12:30PM May 15, 2022Observed: 4.94 ft at 12:45PM May 15, 2022Observed: 4.94 ft at 1:00PM May 15, 2022Observed: 4.95 ft at 1:15PM May 15, 2022Observed: 4.96 ft at 1:25PM May 15, 2022Observed: 4.96 ft at 1:30PM May 15, 2022Observed: 4.97 ft at 1:45PM May 15, 2022Observed: 4.99 ft at 2:00PM May 15, 2022Observed: 5 ft at 2:15PM May 15, 2022Observed: 5 ft at 2:30PM May 15, 2022Observed: 5.01 ft at 2:45PM May 15, 2022Observed: 5 ft at 3:00PM May 15, 2022Highest Observation: 5.02 ft at 3:15PM May 15, 2022Observed: 5 ft at 3:30PM May 15, 2022Observed: 5.01 ft at 3:45PM May 15, 2022Observed: 5 ft at 4:00PM May 15, 2022Observed: 5 ft at 4:15PM May 15, 2022Observed: 4.99 ft at 4:30PM May 15, 2022Observed: 4.98 ft at 4:45PM May 15, 2022Observed: 4.98 ft at 5:00PM May 15, 2022Observed: 4.98 ft at 5:15PM May 15, 2022Observed: 4.97 ft at 5:30PM May 15, 2022Observed: 4.98 ft at 5:45PM May 15, 2022Observed: 4.97 ft at 6:00PM May 15, 2022Observed: 4.96 ft at 6:15PM May 15, 2022Observed: 4.95 ft at 6:30PM May 15, 2022Observed: 4.93 ft at 6:45PM May 15, 2022Observed: 4.93 ft at 7:00PM May 15, 2022Observed: 4.93 ft at 7:15PM May 15, 2022Observed: 4.92 ft at 7:30PM May 15, 2022Observed: 4.92 ft at 7:45PM May 15, 2022Observed: 4.9 ft at 8:00PM May 15, 2022Observed: 4.88 ft at 8:15PM May 15, 2022Observed: 4.88 ft at 8:30PM May 15, 2022Observed: 4.87 ft at 8:45PM May 15, 2022Observed: 4.86 ft at 9:00PM May 15, 2022Observed: 4.84 ft at 9:15PM May 15, 2022Observed: 4.84 ft at 9:30PM May 15, 2022Observed: 4.84 ft at 9:45PM May 15, 2022Observed: 4.85 ft at 10:00PM May 15, 2022Observed: 4.85 ft at 10:15PM May 15, 2022Observed: 4.85 ft at 10:30PM May 15, 2022Observed: 4.86 ft at 10:45PM May 15, 2022Observed: 4.87 ft at 11:00PM May 15, 2022Observed: 4.86 ft at 11:15PM May 15, 2022Observed: 4.85 ft at 11:30PM May 15, 2022Observed: 4.83 ft at 11:45PM May 15, 2022Observed: 4.83 ft at 12:00AM May 16, 2022Observed: 4.81 ft at 12:15AM May 16, 2022Observed: 4.81 ft at 12:30AM May 16, 2022Observed: 4.79 ft at 12:45AM May 16, 2022Observed: 4.78 ft at 1:00AM May 16, 2022Observed: 4.78 ft at 1:15AM May 16, 2022Observed: 4.76 ft at 1:26AM May 16, 2022Observed: 4.76 ft at 1:30AM May 16, 2022Observed: 4.77 ft at 1:45AM May 16, 2022Observed: 4.76 ft at 2:00AM May 16, 2022Observed: 4.75 ft at 2:15AM May 16, 2022Observed: 4.73 ft at 2:30AM May 16, 2022Observed: 4.74 ft at 2:45AM May 16, 2022Observed: 4.73 ft at 3:00AM May 16, 2022Observed: 4.73 ft at 3:15AM May 16, 2022Observed: 4.72 ft at 3:30AM May 16, 2022Observed: 4.72 ft at 3:45AM May 16, 2022Observed: 4.71 ft at 4:00AM May 16, 2022Observed: 4.7 ft at 4:15AM May 16, 2022Observed: 4.7 ft at 4:30AM May 16, 2022Observed: 4.69 ft at 4:45AM May 16, 2022Observed: 4.69 ft at 5:00AM May 16, 2022Observed: 4.68 ft at 5:15AM May 16, 2022Observed: 4.66 ft at 5:30AM May 16, 2022Observed: 4.66 ft at 5:45AM May 16, 2022Observed: 4.66 ft at 6:00AM May 16, 2022Observed: 4.66 ft at 6:15AM May 16, 2022Observed: 4.65 ft at 6:30AM May 16, 2022Observed: 4.64 ft at 6:45AM May 16, 2022Observed: 4.62 ft at 7:00AM May 16, 2022Observed: 4.63 ft at 7:15AM May 16, 2022Observed: 4.62 ft at 7:30AM May 16, 2022Observed: 4.61 ft at 7:45AM May 16, 2022Observed: 4.61 ft at 8:00AM May 16, 2022Observed: 4.59 ft at 8:15AM May 16, 2022Observed: 4.6 ft at 8:30AM May 16, 2022Observed: 4.59 ft at 8:45AM May 16, 2022Observed: 4.57 ft at 9:00AM May 16, 2022Observed: 4.57 ft at 9:15AM May 16, 2022Observed: 4.56 ft at 10:30AM May 16, 2022Observed: 4.56 ft at 10:45AM May 16, 2022Observed: 4.54 ft at 11:00AM May 16, 2022Observed: 4.54 ft at 11:15AM May 16, 2022Observed: 4.54 ft at 11:30AM May 16, 2022Observed: 4.54 ft at 11:45AM May 16, 2022Observed: 4.54 ft at 12:00PM May 16, 2022Observed: 4.52 ft at 12:15PM May 16, 2022Observed: 4.54 ft at 12:30PM May 16, 2022Observed: 4.54 ft at 12:45PM May 16, 2022Observed: 4.54 ft at 1:00PM May 16, 2022Observed: 4.53 ft at 1:15PM May 16, 2022Observed: 4.51 ft at 1:26PM May 16, 2022Observed: 4.51 ft at 1:30PM May 16, 2022Observed: 4.53 ft at 1:45PM May 16, 2022Observed: 4.52 ft at 2:00PM May 16, 2022Observed: 4.52 ft at 2:15PM May 16, 2022Observed: 4.55 ft at 2:30PM May 16, 2022Observed: 4.58 ft at 2:45PM May 16, 2022Observed: 4.52 ft at 3:00PM May 16, 2022Observed: 4.53 ft at 3:15PM May 16, 2022Observed: 4.52 ft at 3:30PM May 16, 2022Observed: 4.5 ft at 3:45PM May 16, 2022Observed: 4.52 ft at 4:00PM May 16, 2022Observed: 4.5 ft at 4:15PM May 16, 2022Observed: 4.5 ft at 4:30PM May 16, 2022Observed: 4.52 ft at 4:45PM May 16, 2022Observed: 4.49 ft at 5:00PM May 16, 2022Observed: 4.5 ft at 5:15PM May 16, 2022Observed: 4.51 ft at 5:30PM May 16, 2022Observed: 4.5 ft at 5:45PM May 16, 2022Observed: 4.51 ft at 6:00PM May 16, 2022Observed: 4.49 ft at 6:15PM May 16, 2022Observed: 4.51 ft at 6:30PM May 16, 2022Observed: 4.51 ft at 6:45PM May 16, 2022Observed: 4.52 ft at 7:00PM May 16, 2022Observed: 4.52 ft at 7:15PM May 16, 2022Observed: 4.51 ft at 7:30PM May 16, 2022Observed: 4.52 ft at 7:45PM May 16, 2022Observed: 4.52 ft at 8:00PM May 16, 2022Observed: 4.51 ft at 8:15PM May 16, 2022Observed: 4.53 ft at 8:30PM May 16, 2022Observed: 4.53 ft at 8:45PM May 16, 2022Observed: 4.53 ft at 9:00PM May 16, 2022Observed: 4.54 ft at 9:15PM May 16, 2022Observed: 4.53 ft at 9:30PM May 16, 2022Observed: 4.54 ft at 9:45PM May 16, 2022Observed: 4.53 ft at 10:00PM May 16, 2022Observed: 4.53 ft at 10:15PM May 16, 2022Observed: 4.54 ft at 10:30PM May 16, 2022Observed: 4.54 ft at 10:45PM May 16, 2022Observed: 4.54 ft at 11:00PM May 16, 2022Observed: 4.52 ft at 11:15PM May 16, 2022Observed: 4.54 ft at 11:30PM May 16, 2022Observed: 4.54 ft at 11:45PM May 16, 2022Observed: 4.53 ft at 12:00AM May 17, 2022Observed: 4.53 ft at 12:15AM May 17, 2022Observed: 4.53 ft at 12:30AM May 17, 2022Observed: 4.53 ft at 12:45AM May 17, 2022Observed: 4.53 ft at 1:00AM May 17, 2022Observed: 4.51 ft at 1:15AM May 17, 2022Observed: 4.52 ft at 1:26AM May 17, 2022Observed: 4.52 ft at 1:30AM May 17, 2022Observed: 4.51 ft at 1:45AM May 17, 2022Observed: 4.51 ft at 2:00AM May 17, 2022Observed: 4.5 ft at 2:15AM May 17, 2022Observed: 4.48 ft at 2:30AM May 17, 2022Observed: 4.49 ft at 2:45AM May 17, 2022Observed: 4.48 ft at 3:00AM May 17, 2022Observed: 4.49 ft at 3:15AM May 17, 2022Observed: 4.48 ft at 3:30AM May 17, 2022Observed: 4.5 ft at 3:45AM May 17, 2022Observed: 4.48 ft at 4:00AM May 17, 2022Observed: 4.49 ft at 4:15AM May 17, 2022Observed: 4.5 ft at 4:30AM May 17, 2022Observed: 4.49 ft at 4:45AM May 17, 2022Observed: 4.48 ft at 5:00AM May 17, 2022Observed: 4.49 ft at 5:15AM May 17, 2022Observed: 4.49 ft at 5:30AM May 17, 2022Observed: 4.5 ft at 5:45AM May 17, 2022Observed: 4.48 ft at 6:00AM May 17, 2022Observed: 4.48 ft at 6:15AM May 17, 2022Observed: 4.48 ft at 6:30AM May 17, 2022Observed: 4.5 ft at 6:45AM May 17, 2022Observed: 4.49 ft at 7:00AM May 17, 2022Observed: 4.5 ft at 7:15AM May 17, 2022Observed: 4.5 ft at 7:30AM May 17, 2022Observed: 4.5 ft at 7:45AM May 17, 2022Observed: 4.5 ft at 8:00AM May 17, 2022Observed: 4.48 ft at 8:15AM May 17, 2022Observed: 4.49 ft at 8:30AM May 17, 2022Observed: 4.48 ft at 8:45AM May 17, 2022Observed: 4.49 ft at 9:00AM May 17, 2022Observed: 4.49 ft at 9:15AM May 17, 2022Observed: 4.5 ft at 9:30AM May 17, 2022Observed: 4.5 ft at 9:45AM May 17, 2022Observed: 4.51 ft at 10:00AM May 17, 2022Observed: 4.5 ft at 10:15AM May 17, 2022Observed: 4.5 ft at 10:30AM May 17, 2022Observed: 4.51 ft at 10:45AM May 17, 2022Observed: 4.5 ft at 11:00AM May 17, 2022Observed: 4.5 ft at 11:15AM May 17, 2022Observed: 4.51 ft at 11:30AM May 17, 2022Observed: 4.52 ft at 11:45AM May 17, 2022Observed: 4.52 ft at 12:00PM May 17, 2022Observed: 4.52 ft at 12:15PM May 17, 2022Highest Forecast: 4.6 ft 2:00PM May 17, 2022Forecast: 4.5 ft 8:00PM May 17, 2022Forecast: 4.5 ft 2:00AM May 18, 2022Forecast: 4.5 ft 8:00AM May 18, 2022Forecast: 4.4 ft 2:00PM May 18, 2022Forecast: 4.4 ft 8:00PM May 18, 2022Forecast: 4.3 ft 2:00AM May 19, 2022Forecast: 4.2 ft 8:00AM May 19, 2022Forecast: 4.2 ft 2:00PM May 19, 2022Forecast: 4.3 ft 8:00PM May 19, 2022Forecast: 4.3 ft 2:00AM May 20, 2022Forecast: 4.4 ft 8:00AM May 20, 2022USGS--Water Resources of the United StatesMTLP1(plotting HGIRG) Graph Created (1:18PM May 17, 2022)ObservedForecast (issued 9:35AM May 17)Latest observed value: 4.52 ft at 12:15 PM EDT 17-May-2022. Flood Stage is 11 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Stage may be affected by ice during winter months.

NOTE: Forecasts for the Swatara Creek at Middletown are issued routinely year-round.

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Upstream Gauge - near Hershey Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 15
Flood Stage: 11
Action Stage: 10
Low Stage (in feet): 0

Historic Crests
(1) 23.29 ft on 09/09/2011
(2) 16.36 ft on 03/12/2011
(3) 16.19 ft on 07/26/2018
(4) 13.68 ft on 12/26/2020 (P)
(5) 13.46 ft on 09/03/2021 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.26 ft on 02/05/2022 (P)
(2) 13.46 ft on 09/03/2021 (P)
(3) 13.68 ft on 12/26/2020 (P)
(4) 11.76 ft on 09/12/2018
(5) 16.19 ft on 07/26/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
KML Image
Gauge LocationGauge Map Marker
 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 Collapse
If you notice any errors in the below information, please contact our Webmaster
23.29 Flood of Record. Level of flooding associated with the remnants of Tropical Storm Lee on September 9 2011.
20 Widespread flooding of structures...including the trailer park at Harborton Place and Caravan Court.
18 Widespread flooding occurs. Numerous homes are affected by high water. Route 230 is affected. Flooding begins in the vicinity of Hoffer Park.
15 Flooding begins in the vicinity of Few Avenue and near the community swimming pool.
12 Both banks overflow upstream of the Vine Street Bridge and several basements are affected.
11 Minor overbank flooding begins near the Vine Street Bridge downstream to the Susquehanna River.
Photos
(1) Upstream from gage site
(2) Downstream from Gage
(3) River gage
About This Location Collapse

Latitude: 40.192500° N, Longitude: 76.728333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 11 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 278.56 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
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)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

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.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
State College Weather Forecast Office
328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 231-2408
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