Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

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

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 
Hydrograph River at a Glance Download Inundation
Mapping
Swatara Creek at Middletown Stage (ft)Observed: 5.43 ft at 3:45AM Apr 14, 2021Observed: 5.43 ft at 4:00AM Apr 14, 2021Observed: 5.43 ft at 4:15AM Apr 14, 2021Observed: 5.44 ft at 4:30AM Apr 14, 2021Observed: 5.44 ft at 4:45AM Apr 14, 2021Observed: 5.45 ft at 5:00AM Apr 14, 2021Observed: 5.46 ft at 5:15AM Apr 14, 2021Observed: 5.46 ft at 5:30AM Apr 14, 2021Observed: 5.47 ft at 5:40AM Apr 14, 2021Observed: 5.47 ft at 5:45AM Apr 14, 2021Observed: 5.48 ft at 6:00AM Apr 14, 2021Observed: 5.48 ft at 6:15AM Apr 14, 2021Observed: 5.48 ft at 6:30AM Apr 14, 2021Observed: 5.49 ft at 6:45AM Apr 14, 2021Observed: 5.5 ft at 7:00AM Apr 14, 2021Observed: 5.51 ft at 7:15AM Apr 14, 2021Observed: 5.52 ft at 7:30AM Apr 14, 2021Observed: 5.52 ft at 7:45AM Apr 14, 2021Observed: 5.53 ft at 8:00AM Apr 14, 2021Observed: 5.54 ft at 8:15AM Apr 14, 2021Observed: 5.54 ft at 8:30AM Apr 14, 2021Observed: 5.55 ft at 8:45AM Apr 14, 2021Observed: 5.56 ft at 9:00AM Apr 14, 2021Observed: 5.56 ft at 9:15AM Apr 14, 2021Observed: 5.57 ft at 9:30AM Apr 14, 2021Observed: 5.58 ft at 9:45AM Apr 14, 2021Observed: 5.57 ft at 10:00AM Apr 14, 2021Observed: 5.58 ft at 10:15AM Apr 14, 2021Observed: 5.58 ft at 10:30AM Apr 14, 2021Observed: 5.58 ft at 10:45AM Apr 14, 2021Observed: 5.58 ft at 11:00AM Apr 14, 2021Highest Observation: 5.59 ft at 11:15AM Apr 14, 2021Highest Observation: 5.59 ft at 11:30AM Apr 14, 2021Highest Observation: 5.59 ft at 11:45AM Apr 14, 2021Highest Observation: 5.59 ft at 12:00PM Apr 14, 2021Highest Observation: 5.59 ft at 12:15PM Apr 14, 2021Highest Observation: 5.59 ft at 12:30PM Apr 14, 2021Highest Observation: 5.59 ft at 12:45PM Apr 14, 2021Observed: 5.58 ft at 1:00PM Apr 14, 2021Highest Observation: 5.59 ft at 1:15PM Apr 14, 2021Highest Observation: 5.59 ft at 1:30PM Apr 14, 2021Observed: 5.58 ft at 1:45PM Apr 14, 2021Observed: 5.58 ft at 2:00PM Apr 14, 2021Observed: 5.58 ft at 2:15PM Apr 14, 2021Observed: 5.57 ft at 2:30PM Apr 14, 2021Observed: 5.57 ft at 2:45PM Apr 14, 2021Observed: 5.57 ft at 3:00PM Apr 14, 2021Observed: 5.57 ft at 3:15PM Apr 14, 2021Observed: 5.56 ft at 3:30PM Apr 14, 2021Observed: 5.56 ft at 3:45PM Apr 14, 2021Observed: 5.56 ft at 4:00PM Apr 14, 2021Observed: 5.56 ft at 4:15PM Apr 14, 2021Observed: 5.55 ft at 4:30PM Apr 14, 2021Observed: 5.55 ft at 4:45PM Apr 14, 2021Observed: 5.55 ft at 5:00PM Apr 14, 2021Observed: 5.54 ft at 5:15PM Apr 14, 2021Observed: 5.53 ft at 5:30PM Apr 14, 2021Observed: 5.53 ft at 5:41PM Apr 14, 2021Observed: 5.53 ft at 5:45PM Apr 14, 2021Observed: 5.53 ft at 6:00PM Apr 14, 2021Observed: 5.52 ft at 6:15PM Apr 14, 2021Observed: 5.52 ft at 6:30PM Apr 14, 2021Observed: 5.51 ft at 6:45PM Apr 14, 2021Observed: 5.51 ft at 7:00PM Apr 14, 2021Observed: 5.5 ft at 7:15PM Apr 14, 2021Observed: 5.5 ft at 7:30PM Apr 14, 2021Observed: 5.49 ft at 7:45PM Apr 14, 2021Observed: 5.49 ft at 8:00PM Apr 14, 2021Observed: 5.48 ft at 8:15PM Apr 14, 2021Observed: 5.47 ft at 8:30PM Apr 14, 2021Observed: 5.46 ft at 8:45PM Apr 14, 2021Observed: 5.46 ft at 9:00PM Apr 14, 2021Observed: 5.46 ft at 9:15PM Apr 14, 2021Observed: 5.45 ft at 9:30PM Apr 14, 2021Observed: 5.45 ft at 9:45PM Apr 14, 2021Observed: 5.44 ft at 10:00PM Apr 14, 2021Observed: 5.43 ft at 10:15PM Apr 14, 2021Observed: 5.43 ft at 10:30PM Apr 14, 2021Observed: 5.42 ft at 10:45PM Apr 14, 2021Observed: 5.42 ft at 11:00PM Apr 14, 2021Observed: 5.42 ft at 11:15PM Apr 14, 2021Observed: 5.42 ft at 11:30PM Apr 14, 2021Observed: 5.4 ft at 11:45PM Apr 14, 2021Observed: 5.4 ft at 12:00AM Apr 15, 2021Observed: 5.4 ft at 12:15AM Apr 15, 2021Observed: 5.39 ft at 12:30AM Apr 15, 2021Observed: 5.39 ft at 12:45AM Apr 15, 2021Observed: 5.38 ft at 1:00AM Apr 15, 2021Observed: 5.38 ft at 1:15AM Apr 15, 2021Observed: 5.38 ft at 1:30AM Apr 15, 2021Observed: 5.37 ft at 1:45AM Apr 15, 2021Observed: 5.36 ft at 2:00AM Apr 15, 2021Observed: 5.35 ft at 2:15AM Apr 15, 2021Observed: 5.35 ft at 2:30AM Apr 15, 2021Observed: 5.34 ft at 2:45AM Apr 15, 2021Observed: 5.34 ft at 3:00AM Apr 15, 2021Observed: 5.33 ft at 3:15AM Apr 15, 2021Observed: 5.33 ft at 3:30AM Apr 15, 2021Observed: 5.32 ft at 3:45AM Apr 15, 2021Observed: 5.31 ft at 4:00AM Apr 15, 2021Observed: 5.31 ft at 4:15AM Apr 15, 2021Observed: 5.3 ft at 4:30AM Apr 15, 2021Observed: 5.3 ft at 4:45AM Apr 15, 2021Observed: 5.29 ft at 5:00AM Apr 15, 2021Observed: 5.29 ft at 5:15AM Apr 15, 2021Observed: 5.28 ft at 5:30AM Apr 15, 2021Observed: 5.28 ft at 5:40AM Apr 15, 2021Observed: 5.28 ft at 5:45AM Apr 15, 2021Observed: 5.28 ft at 6:00AM Apr 15, 2021Observed: 5.27 ft at 6:15AM Apr 15, 2021Observed: 5.26 ft at 6:30AM Apr 15, 2021Observed: 5.27 ft at 6:45AM Apr 15, 2021Observed: 5.25 ft at 7:00AM Apr 15, 2021Observed: 5.25 ft at 7:15AM Apr 15, 2021Observed: 5.25 ft at 7:30AM Apr 15, 2021Observed: 5.24 ft at 7:45AM Apr 15, 2021Observed: 5.24 ft at 8:00AM Apr 15, 2021Observed: 5.24 ft at 8:15AM Apr 15, 2021Observed: 5.23 ft at 8:30AM Apr 15, 2021Observed: 5.23 ft at 8:45AM Apr 15, 2021Observed: 5.23 ft at 9:00AM Apr 15, 2021Observed: 5.22 ft at 9:15AM Apr 15, 2021Observed: 5.22 ft at 9:30AM Apr 15, 2021Observed: 5.22 ft at 9:45AM Apr 15, 2021Observed: 5.21 ft at 10:00AM Apr 15, 2021Observed: 5.21 ft at 10:15AM Apr 15, 2021Observed: 5.2 ft at 10:30AM Apr 15, 2021Observed: 5.2 ft at 10:45AM Apr 15, 2021Observed: 5.2 ft at 11:00AM Apr 15, 2021Observed: 5.19 ft at 11:15AM Apr 15, 2021Observed: 5.19 ft at 11:30AM Apr 15, 2021Observed: 5.18 ft at 11:45AM Apr 15, 2021Observed: 5.18 ft at 12:00PM Apr 15, 2021Observed: 5.17 ft at 12:15PM Apr 15, 2021Observed: 5.17 ft at 12:30PM Apr 15, 2021Observed: 5.17 ft at 12:45PM Apr 15, 2021Observed: 5.16 ft at 1:00PM Apr 15, 2021Observed: 5.16 ft at 1:15PM Apr 15, 2021Observed: 5.16 ft at 1:30PM Apr 15, 2021Observed: 5.15 ft at 1:45PM Apr 15, 2021Observed: 5.15 ft at 2:00PM Apr 15, 2021Observed: 5.15 ft at 2:15PM Apr 15, 2021Observed: 5.14 ft at 2:30PM Apr 15, 2021Observed: 5.14 ft at 2:45PM Apr 15, 2021Observed: 5.14 ft at 3:00PM Apr 15, 2021Observed: 5.13 ft at 3:15PM Apr 15, 2021Observed: 5.12 ft at 3:30PM Apr 15, 2021Observed: 5.12 ft at 3:45PM Apr 15, 2021Observed: 5.12 ft at 4:00PM Apr 15, 2021Observed: 5.12 ft at 4:15PM Apr 15, 2021Observed: 5.11 ft at 4:30PM Apr 15, 2021Observed: 5.12 ft at 4:45PM Apr 15, 2021Observed: 5.11 ft at 5:00PM Apr 15, 2021Observed: 5.1 ft at 5:15PM Apr 15, 2021Observed: 5.11 ft at 5:30PM Apr 15, 2021Observed: 5.1 ft at 5:41PM Apr 15, 2021Observed: 5.1 ft at 5:45PM Apr 15, 2021Observed: 5.09 ft at 6:00PM Apr 15, 2021Observed: 5.09 ft at 6:15PM Apr 15, 2021Observed: 5.08 ft at 6:30PM Apr 15, 2021Observed: 5.09 ft at 6:45PM Apr 15, 2021Observed: 5.09 ft at 7:00PM Apr 15, 2021Observed: 5.09 ft at 7:15PM Apr 15, 2021Observed: 5.07 ft at 7:30PM Apr 15, 2021Observed: 5.07 ft at 7:45PM Apr 15, 2021Observed: 5.07 ft at 8:00PM Apr 15, 2021Observed: 5.06 ft at 8:15PM Apr 15, 2021Observed: 5.06 ft at 8:30PM Apr 15, 2021Observed: 5.05 ft at 8:45PM Apr 15, 2021Observed: 5.05 ft at 9:00PM Apr 15, 2021Observed: 5.04 ft at 9:15PM Apr 15, 2021Observed: 5.04 ft at 9:30PM Apr 15, 2021Observed: 5.04 ft at 9:45PM Apr 15, 2021Observed: 5.04 ft at 10:00PM Apr 15, 2021Observed: 5.04 ft at 10:15PM Apr 15, 2021Observed: 5.03 ft at 10:30PM Apr 15, 2021Observed: 5.02 ft at 10:45PM Apr 15, 2021Observed: 5.02 ft at 11:00PM Apr 15, 2021Observed: 5.01 ft at 11:15PM Apr 15, 2021Observed: 5.01 ft at 11:30PM Apr 15, 2021Observed: 5 ft at 11:45PM Apr 15, 2021Observed: 5.01 ft at 12:00AM Apr 16, 2021Observed: 5 ft at 12:15AM Apr 16, 2021Observed: 5 ft at 12:30AM Apr 16, 2021Observed: 4.99 ft at 12:45AM Apr 16, 2021Observed: 4.99 ft at 1:00AM Apr 16, 2021Observed: 4.98 ft at 1:15AM Apr 16, 2021Observed: 4.98 ft at 1:30AM Apr 16, 2021Observed: 4.97 ft at 1:45AM Apr 16, 2021Observed: 4.97 ft at 2:00AM Apr 16, 2021Observed: 4.97 ft at 2:15AM Apr 16, 2021Observed: 4.96 ft at 2:30AM Apr 16, 2021Observed: 4.96 ft at 2:45AM Apr 16, 2021Observed: 4.96 ft at 3:00AM Apr 16, 2021Observed: 4.95 ft at 3:15AM Apr 16, 2021Observed: 4.95 ft at 3:30AM Apr 16, 2021Observed: 4.95 ft at 3:45AM Apr 16, 2021Observed: 4.94 ft at 4:00AM Apr 16, 2021Observed: 4.93 ft at 4:15AM Apr 16, 2021Observed: 4.93 ft at 4:30AM Apr 16, 2021Observed: 4.93 ft at 4:45AM Apr 16, 2021Observed: 4.93 ft at 5:00AM Apr 16, 2021Observed: 4.92 ft at 5:15AM Apr 16, 2021Observed: 4.93 ft at 5:30AM Apr 16, 2021Observed: 4.92 ft at 5:41AM Apr 16, 2021Observed: 4.92 ft at 5:45AM Apr 16, 2021Observed: 4.92 ft at 6:00AM Apr 16, 2021Observed: 4.91 ft at 6:15AM Apr 16, 2021Observed: 4.9 ft at 6:30AM Apr 16, 2021Observed: 4.9 ft at 6:45AM Apr 16, 2021Observed: 4.9 ft at 7:00AM Apr 16, 2021Observed: 4.89 ft at 7:15AM Apr 16, 2021Observed: 4.89 ft at 7:30AM Apr 16, 2021Observed: 4.88 ft at 7:45AM Apr 16, 2021Observed: 4.88 ft at 8:00AM Apr 16, 2021Observed: 4.88 ft at 8:15AM Apr 16, 2021Observed: 4.88 ft at 8:30AM Apr 16, 2021Observed: 4.88 ft at 8:45AM Apr 16, 2021Observed: 4.87 ft at 9:00AM Apr 16, 2021Observed: 4.86 ft at 9:15AM Apr 16, 2021Observed: 4.86 ft at 9:30AM Apr 16, 2021Observed: 4.86 ft at 9:45AM Apr 16, 2021Observed: 4.86 ft at 10:00AM Apr 16, 2021Observed: 4.86 ft at 10:15AM Apr 16, 2021Observed: 4.83 ft at 12:30PM Apr 16, 2021Observed: 4.82 ft at 12:45PM Apr 16, 2021Observed: 4.81 ft at 1:00PM Apr 16, 2021Observed: 4.81 ft at 1:15PM Apr 16, 2021Observed: 4.82 ft at 1:30PM Apr 16, 2021Observed: 4.81 ft at 1:45PM Apr 16, 2021Observed: 4.81 ft at 2:00PM Apr 16, 2021Observed: 4.8 ft at 2:15PM Apr 16, 2021Observed: 4.8 ft at 2:30PM Apr 16, 2021Observed: 4.79 ft at 2:45PM Apr 16, 2021Observed: 4.79 ft at 3:00PM Apr 16, 2021Observed: 4.78 ft at 3:15PM Apr 16, 2021Observed: 4.78 ft at 3:30PM Apr 16, 2021Observed: 4.78 ft at 3:45PM Apr 16, 2021Observed: 4.78 ft at 4:00PM Apr 16, 2021Observed: 4.78 ft at 4:15PM Apr 16, 2021Observed: 4.76 ft at 4:30PM Apr 16, 2021Observed: 4.77 ft at 4:45PM Apr 16, 2021Observed: 4.76 ft at 5:00PM Apr 16, 2021Observed: 4.76 ft at 5:15PM Apr 16, 2021Observed: 4.76 ft at 5:30PM Apr 16, 2021Observed: 4.76 ft at 5:41PM Apr 16, 2021Observed: 4.76 ft at 5:45PM Apr 16, 2021Observed: 4.75 ft at 6:00PM Apr 16, 2021Observed: 4.74 ft at 6:15PM Apr 16, 2021Observed: 4.74 ft at 6:30PM Apr 16, 2021Observed: 4.73 ft at 6:45PM Apr 16, 2021Observed: 4.72 ft at 7:00PM Apr 16, 2021Observed: 4.72 ft at 7:15PM Apr 16, 2021Observed: 4.72 ft at 7:30PM Apr 16, 2021Observed: 4.71 ft at 7:45PM Apr 16, 2021Observed: 4.71 ft at 8:00PM Apr 16, 2021Observed: 4.71 ft at 8:15PM Apr 16, 2021Observed: 4.7 ft at 8:30PM Apr 16, 2021Observed: 4.7 ft at 8:45PM Apr 16, 2021Observed: 4.69 ft at 9:00PM Apr 16, 2021Observed: 4.69 ft at 9:15PM Apr 16, 2021Observed: 4.68 ft at 9:30PM Apr 16, 2021Observed: 4.68 ft at 9:45PM Apr 16, 2021Observed: 4.67 ft at 10:00PM Apr 16, 2021Observed: 4.67 ft at 10:15PM Apr 16, 2021Observed: 4.69 ft at 10:30PM Apr 16, 2021Observed: 4.67 ft at 10:45PM Apr 16, 2021Observed: 4.67 ft at 11:00PM Apr 16, 2021Observed: 4.66 ft at 11:15PM Apr 16, 2021Observed: 4.66 ft at 11:30PM Apr 16, 2021Observed: 4.66 ft at 11:45PM Apr 16, 2021Observed: 4.65 ft at 12:00AM Apr 17, 2021Observed: 4.65 ft at 12:15AM Apr 17, 2021Observed: 4.65 ft at 12:30AM Apr 17, 2021Observed: 4.64 ft at 12:45AM Apr 17, 2021Observed: 4.64 ft at 1:00AM Apr 17, 2021Observed: 4.64 ft at 1:15AM Apr 17, 2021Observed: 4.63 ft at 1:30AM Apr 17, 2021Observed: 4.63 ft at 1:45AM Apr 17, 2021Observed: 4.63 ft at 2:00AM Apr 17, 2021Observed: 4.62 ft at 2:15AM Apr 17, 2021Highest Forecast: 4.6 ft 8:00AM Apr 17, 2021Highest Forecast: 4.6 ft 2:00PM Apr 17, 2021Forecast: 4.5 ft 8:00PM Apr 17, 2021Forecast: 4.5 ft 2:00AM Apr 18, 2021Forecast: 4.5 ft 8:00AM Apr 18, 2021Forecast: 4.5 ft 2:00PM Apr 18, 2021Forecast: 4.5 ft 8:00PM Apr 18, 2021Forecast: 4.5 ft 2:00AM Apr 19, 2021Forecast: 4.5 ft 8:00AM Apr 19, 2021USGS--Water Resources of the United StatesMTLP1(plotting HGIRG) Graph Created (3:32AM Apr 17, 2021)ObservedForecast (issued 9:50AM Apr 16)Latest observed value: 4.62 ft at 2:15 AM EDT 17-Apr-2021. 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.

Return to Area Map
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) 12.67 ft on 03/08/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.68 ft on 12/26/2020 (P)
(2) 11.76 ft on 09/12/2018
(3) 16.19 ft on 07/26/2018
(4) 11.81 ft on 01/14/2014
(5) 9.97 ft on 11/24/2011
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities