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 near Hershey Stage (ft)Flow (kcfs)Observed: 1.79 ft at 1:00AM Nov 25, 2020Observed: 1.79 ft at 1:15AM Nov 25, 2020Observed: 1.79 ft at 1:30AM Nov 25, 2020Observed: 1.79 ft at 1:45AM Nov 25, 2020Observed: 1.79 ft at 2:00AM Nov 25, 2020Observed: 1.78 ft at 2:15AM Nov 25, 2020Observed: 1.79 ft at 2:30AM Nov 25, 2020Observed: 1.79 ft at 2:45AM Nov 25, 2020Observed: 1.78 ft at 3:00AM Nov 25, 2020Observed: 1.78 ft at 3:15AM Nov 25, 2020Observed: 1.78 ft at 3:30AM Nov 25, 2020Observed: 1.78 ft at 3:45AM Nov 25, 2020Observed: 1.78 ft at 4:00AM Nov 25, 2020Observed: 1.78 ft at 4:15AM Nov 25, 2020Observed: 1.78 ft at 4:30AM Nov 25, 2020Observed: 1.78 ft at 4:45AM Nov 25, 2020Observed: 1.78 ft at 5:00AM Nov 25, 2020Observed: 1.78 ft at 5:15AM Nov 25, 2020Observed: 1.78 ft at 5:30AM Nov 25, 2020Observed: 1.77 ft at 5:45AM Nov 25, 2020Observed: 1.77 ft at 6:00AM Nov 25, 2020Observed: 1.77 ft at 6:15AM Nov 25, 2020Observed: 1.77 ft at 6:30AM Nov 25, 2020Observed: 1.77 ft at 6:45AM Nov 25, 2020Observed: 1.77 ft at 7:00AM Nov 25, 2020Observed: 1.77 ft at 7:15AM Nov 25, 2020Observed: 1.77 ft at 7:30AM Nov 25, 2020Observed: 1.77 ft at 7:45AM Nov 25, 2020Observed: 1.76 ft at 8:00AM Nov 25, 2020Observed: 1.76 ft at 8:15AM Nov 25, 2020Observed: 1.76 ft at 8:30AM Nov 25, 2020Observed: 1.76 ft at 8:45AM Nov 25, 2020Observed: 1.76 ft at 9:00AM Nov 25, 2020Observed: 1.76 ft at 9:15AM Nov 25, 2020Observed: 1.76 ft at 9:30AM Nov 25, 2020Observed: 1.76 ft at 9:45AM Nov 25, 2020Observed: 1.75 ft at 10:00AM Nov 25, 2020Observed: 1.76 ft at 10:15AM Nov 25, 2020Observed: 1.75 ft at 10:30AM Nov 25, 2020Observed: 1.76 ft at 10:45AM Nov 25, 2020Observed: 1.75 ft at 11:00AM Nov 25, 2020Observed: 1.76 ft at 11:15AM Nov 25, 2020Observed: 1.75 ft at 11:30AM Nov 25, 2020Observed: 1.75 ft at 11:45AM Nov 25, 2020Observed: 1.75 ft at 12:00PM Nov 25, 2020Observed: 1.75 ft at 12:15PM Nov 25, 2020Observed: 1.75 ft at 12:30PM Nov 25, 2020Observed: 1.75 ft at 12:45PM Nov 25, 2020Observed: 1.75 ft at 1:00PM Nov 25, 2020Observed: 1.76 ft at 1:15PM Nov 25, 2020Observed: 1.75 ft at 1:30PM Nov 25, 2020Observed: 1.76 ft at 1:45PM Nov 25, 2020Observed: 1.76 ft at 2:00PM Nov 25, 2020Observed: 1.76 ft at 2:15PM Nov 25, 2020Observed: 1.76 ft at 2:30PM Nov 25, 2020Observed: 1.76 ft at 2:45PM Nov 25, 2020Observed: 1.76 ft at 3:00PM Nov 25, 2020Observed: 1.76 ft at 3:15PM Nov 25, 2020Observed: 1.76 ft at 3:30PM Nov 25, 2020Observed: 1.76 ft at 3:45PM Nov 25, 2020Observed: 1.76 ft at 4:00PM Nov 25, 2020Observed: 1.76 ft at 4:15PM Nov 25, 2020Observed: 1.76 ft at 4:30PM Nov 25, 2020Observed: 1.76 ft at 4:45PM Nov 25, 2020Observed: 1.76 ft at 5:00PM Nov 25, 2020Observed: 1.76 ft at 5:15PM Nov 25, 2020Observed: 1.76 ft at 5:30PM Nov 25, 2020Observed: 1.76 ft at 5:45PM Nov 25, 2020Observed: 1.76 ft at 6:00PM Nov 25, 2020Observed: 1.76 ft at 6:15PM Nov 25, 2020Observed: 1.76 ft at 6:30PM Nov 25, 2020Observed: 1.76 ft at 6:45PM Nov 25, 2020Observed: 1.76 ft at 7:00PM Nov 25, 2020Observed: 1.76 ft at 7:15PM Nov 25, 2020Observed: 1.76 ft at 7:30PM Nov 25, 2020Observed: 1.76 ft at 7:45PM Nov 25, 2020Observed: 1.75 ft at 8:00PM Nov 25, 2020Observed: 1.76 ft at 8:15PM Nov 25, 2020Observed: 1.75 ft at 8:30PM Nov 25, 2020Observed: 1.75 ft at 8:45PM Nov 25, 2020Observed: 1.75 ft at 9:00PM Nov 25, 2020Observed: 1.75 ft at 9:15PM Nov 25, 2020Observed: 1.75 ft at 9:30PM Nov 25, 2020Observed: 1.75 ft at 9:45PM Nov 25, 2020Observed: 1.75 ft at 10:00PM Nov 25, 2020Observed: 1.75 ft at 10:15PM Nov 25, 2020Observed: 1.75 ft at 10:30PM Nov 25, 2020Observed: 1.75 ft at 10:45PM Nov 25, 2020Observed: 1.75 ft at 11:00PM Nov 25, 2020Observed: 1.75 ft at 11:15PM Nov 25, 2020Observed: 1.75 ft at 11:30PM Nov 25, 2020Observed: 1.75 ft at 11:45PM Nov 25, 2020Observed: 1.75 ft at 12:00AM Nov 26, 2020Observed: 1.75 ft at 12:15AM Nov 26, 2020Observed: 1.75 ft at 12:30AM Nov 26, 2020Observed: 1.75 ft at 12:45AM Nov 26, 2020Observed: 1.75 ft at 1:00AM Nov 26, 2020Observed: 1.75 ft at 1:15AM Nov 26, 2020Observed: 1.75 ft at 1:30AM Nov 26, 2020Observed: 1.74 ft at 1:45AM Nov 26, 2020Observed: 1.74 ft at 2:00AM Nov 26, 2020Observed: 1.74 ft at 2:15AM Nov 26, 2020Observed: 1.74 ft at 2:30AM Nov 26, 2020Observed: 1.74 ft at 2:45AM Nov 26, 2020Observed: 1.74 ft at 3:00AM Nov 26, 2020Observed: 1.74 ft at 3:15AM Nov 26, 2020Observed: 1.74 ft at 3:30AM Nov 26, 2020Observed: 1.74 ft at 3:45AM Nov 26, 2020Observed: 1.74 ft at 4:00AM Nov 26, 2020Observed: 1.74 ft at 4:15AM Nov 26, 2020Observed: 1.74 ft at 4:30AM Nov 26, 2020Observed: 1.74 ft at 4:45AM Nov 26, 2020Observed: 1.74 ft at 5:00AM Nov 26, 2020Observed: 1.74 ft at 5:15AM Nov 26, 2020Observed: 1.74 ft at 5:30AM Nov 26, 2020Observed: 1.74 ft at 5:45AM Nov 26, 2020Observed: 1.74 ft at 6:00AM Nov 26, 2020Observed: 1.74 ft at 6:15AM Nov 26, 2020Observed: 1.74 ft at 6:30AM Nov 26, 2020Observed: 1.74 ft at 6:45AM Nov 26, 2020Observed: 1.74 ft at 7:00AM Nov 26, 2020Observed: 1.74 ft at 7:15AM Nov 26, 2020Observed: 1.74 ft at 7:30AM Nov 26, 2020Observed: 1.74 ft at 7:45AM Nov 26, 2020Observed: 1.74 ft at 8:00AM Nov 26, 2020Observed: 1.74 ft at 8:15AM Nov 26, 2020Observed: 1.74 ft at 8:30AM Nov 26, 2020Observed: 1.74 ft at 8:45AM Nov 26, 2020Observed: 1.74 ft at 9:00AM Nov 26, 2020Observed: 1.74 ft at 9:15AM Nov 26, 2020Observed: 1.74 ft at 9:30AM Nov 26, 2020Observed: 1.74 ft at 9:45AM Nov 26, 2020Observed: 1.74 ft at 10:00AM Nov 26, 2020Observed: 1.74 ft at 10:15AM Nov 26, 2020Observed: 1.74 ft at 10:30AM Nov 26, 2020Observed: 1.74 ft at 10:45AM Nov 26, 2020Observed: 1.74 ft at 11:00AM Nov 26, 2020Observed: 1.74 ft at 11:15AM Nov 26, 2020Observed: 1.74 ft at 11:30AM Nov 26, 2020Observed: 1.74 ft at 11:45AM Nov 26, 2020Observed: 1.74 ft at 12:00PM Nov 26, 2020Observed: 1.74 ft at 12:15PM Nov 26, 2020Observed: 1.75 ft at 12:30PM Nov 26, 2020Observed: 1.75 ft at 12:45PM Nov 26, 2020Observed: 1.74 ft at 1:00PM Nov 26, 2020Observed: 1.74 ft at 1:15PM Nov 26, 2020Observed: 1.74 ft at 1:30PM Nov 26, 2020Observed: 1.75 ft at 1:45PM Nov 26, 2020Observed: 1.75 ft at 2:15PM Nov 26, 2020Observed: 1.76 ft at 7:00PM Nov 26, 2020Observed: 1.76 ft at 7:15PM Nov 26, 2020Observed: 1.76 ft at 7:30PM Nov 26, 2020Observed: 1.76 ft at 7:45PM Nov 26, 2020Observed: 1.76 ft at 8:00PM Nov 26, 2020Observed: 1.76 ft at 8:15PM Nov 26, 2020Observed: 1.76 ft at 8:30PM Nov 26, 2020Observed: 1.76 ft at 8:45PM Nov 26, 2020Observed: 1.76 ft at 9:00PM Nov 26, 2020Observed: 1.76 ft at 9:15PM Nov 26, 2020Observed: 1.76 ft at 9:30PM Nov 26, 2020Observed: 1.76 ft at 9:45PM Nov 26, 2020Observed: 1.76 ft at 10:00PM Nov 26, 2020Observed: 1.76 ft at 10:15PM Nov 26, 2020Observed: 1.76 ft at 10:30PM Nov 26, 2020Observed: 1.76 ft at 10:45PM Nov 26, 2020Observed: 1.76 ft at 11:00PM Nov 26, 2020Observed: 1.76 ft at 11:15PM Nov 26, 2020Observed: 1.77 ft at 11:30PM Nov 26, 2020Observed: 1.77 ft at 11:45PM Nov 26, 2020Observed: 1.77 ft at 12:00AM Nov 27, 2020Observed: 1.77 ft at 12:15AM Nov 27, 2020Observed: 1.77 ft at 12:30AM Nov 27, 2020Observed: 1.77 ft at 12:45AM Nov 27, 2020Observed: 1.77 ft at 1:00AM Nov 27, 2020Observed: 1.77 ft at 1:15AM Nov 27, 2020Observed: 1.77 ft at 1:30AM Nov 27, 2020Observed: 1.77 ft at 1:45AM Nov 27, 2020Observed: 1.77 ft at 2:00AM Nov 27, 2020Observed: 1.77 ft at 2:15AM Nov 27, 2020Observed: 1.77 ft at 2:30AM Nov 27, 2020Observed: 1.77 ft at 2:45AM Nov 27, 2020Observed: 1.78 ft at 3:00AM Nov 27, 2020Observed: 1.78 ft at 3:15AM Nov 27, 2020Observed: 1.78 ft at 3:30AM Nov 27, 2020Observed: 1.78 ft at 3:45AM Nov 27, 2020Observed: 1.78 ft at 4:00AM Nov 27, 2020Observed: 1.78 ft at 4:15AM Nov 27, 2020Observed: 1.78 ft at 4:30AM Nov 27, 2020Observed: 1.78 ft at 4:45AM Nov 27, 2020Observed: 1.78 ft at 5:00AM Nov 27, 2020Observed: 1.78 ft at 5:15AM Nov 27, 2020Observed: 1.78 ft at 5:30AM Nov 27, 2020Observed: 1.78 ft at 5:45AM Nov 27, 2020Observed: 1.78 ft at 6:00AM Nov 27, 2020Observed: 1.78 ft at 6:15AM Nov 27, 2020Observed: 1.78 ft at 6:30AM Nov 27, 2020Observed: 1.78 ft at 6:45AM Nov 27, 2020Observed: 1.78 ft at 7:00AM Nov 27, 2020Observed: 1.79 ft at 7:15AM Nov 27, 2020Observed: 1.79 ft at 7:30AM Nov 27, 2020Observed: 1.79 ft at 7:45AM Nov 27, 2020Observed: 1.79 ft at 8:00AM Nov 27, 2020Observed: 1.79 ft at 8:15AM Nov 27, 2020Observed: 1.79 ft at 8:30AM Nov 27, 2020Observed: 1.79 ft at 8:45AM Nov 27, 2020Observed: 1.79 ft at 9:00AM Nov 27, 2020Observed: 1.79 ft at 9:15AM Nov 27, 2020Observed: 1.79 ft at 9:30AM Nov 27, 2020Highest Observation: 1.8 ft at 9:45AM Nov 27, 2020Highest Observation: 1.8 ft at 10:00AM Nov 27, 2020Highest Observation: 1.8 ft at 10:15AM Nov 27, 2020Highest Observation: 1.8 ft at 10:30AM Nov 27, 2020Highest Observation: 1.8 ft at 10:45AM Nov 27, 2020Highest Observation: 1.8 ft at 11:00AM Nov 27, 2020Highest Observation: 1.8 ft at 11:15AM Nov 27, 2020Highest Observation: 1.8 ft at 11:30AM Nov 27, 2020Highest Observation: 1.8 ft at 11:45AM Nov 27, 2020Highest Observation: 1.8 ft at 12:00PM Nov 27, 2020Highest Observation: 1.8 ft at 12:15PM Nov 27, 2020Highest Observation: 1.8 ft at 12:30PM Nov 27, 2020Highest Observation: 1.8 ft at 12:45PM Nov 27, 2020Highest Observation: 1.8 ft at 1:00PM Nov 27, 2020Highest Observation: 1.8 ft at 1:15PM Nov 27, 2020Highest Observation: 1.8 ft at 1:30PM Nov 27, 2020Highest Observation: 1.8 ft at 1:45PM Nov 27, 2020Highest Observation: 1.8 ft at 2:00PM Nov 27, 2020Highest Observation: 1.8 ft at 2:15PM Nov 27, 2020Highest Observation: 1.8 ft at 2:30PM Nov 27, 2020Highest Observation: 1.8 ft at 2:45PM Nov 27, 2020Highest Observation: 1.8 ft at 3:00PM Nov 27, 2020Highest Observation: 1.8 ft at 3:15PM Nov 27, 2020Highest Observation: 1.8 ft at 3:30PM Nov 27, 2020Highest Observation: 1.8 ft at 3:45PM Nov 27, 2020Highest Observation: 1.8 ft at 4:00PM Nov 27, 2020Highest Observation: 1.8 ft at 4:15PM Nov 27, 2020Highest Observation: 1.8 ft at 4:30PM Nov 27, 2020Highest Observation: 1.8 ft at 4:45PM Nov 27, 2020Highest Observation: 1.8 ft at 5:00PM Nov 27, 2020Highest Observation: 1.8 ft at 5:15PM Nov 27, 2020Highest Observation: 1.8 ft at 5:30PM Nov 27, 2020Highest Observation: 1.8 ft at 5:45PM Nov 27, 2020Highest Observation: 1.8 ft at 6:00PM Nov 27, 2020Highest Observation: 1.8 ft at 6:15PM Nov 27, 2020Observed: 1.79 ft at 6:30PM Nov 27, 2020Observed: 1.79 ft at 6:45PM Nov 27, 2020Observed: 1.79 ft at 7:00PM Nov 27, 2020Observed: 1.79 ft at 7:15PM Nov 27, 2020Observed: 1.79 ft at 7:30PM Nov 27, 2020Observed: 1.79 ft at 7:45PM Nov 27, 2020Observed: 1.79 ft at 8:00PM Nov 27, 2020Observed: 1.79 ft at 8:15PM Nov 27, 2020Observed: 1.79 ft at 8:30PM Nov 27, 2020Observed: 1.79 ft at 8:45PM Nov 27, 2020Observed: 1.79 ft at 9:00PM Nov 27, 2020Observed: 1.79 ft at 9:15PM Nov 27, 2020Observed: 1.79 ft at 9:30PM Nov 27, 2020Observed: 1.79 ft at 9:45PM Nov 27, 2020Observed: 1.79 ft at 10:00PM Nov 27, 2020Observed: 1.79 ft at 10:15PM Nov 27, 2020Observed: 1.79 ft at 10:30PM Nov 27, 2020Observed: 1.79 ft at 10:45PM Nov 27, 2020Observed: 1.79 ft at 11:00PM Nov 27, 2020Observed: 1.79 ft at 11:15PM Nov 27, 2020Observed: 1.79 ft at 11:30PM Nov 27, 2020Observed: 1.78 ft at 11:45PM Nov 27, 2020Highest Forecast: 1.8 ft 1:00AM Nov 28, 2020Highest Forecast: 1.8 ft 7:00AM Nov 28, 2020Forecast: 1.7 ft 1:00PM Nov 28, 2020Forecast: 1.7 ft 7:00PM Nov 28, 2020Forecast: 1.7 ft 1:00AM Nov 29, 2020Forecast: 1.7 ft 7:00AM Nov 29, 2020Forecast: 1.7 ft 1:00PM Nov 29, 2020Forecast: 1.7 ft 7:00PM Nov 29, 2020Forecast: 1.7 ft 1:00AM Nov 30, 2020Forecast: 1.7 ft 7:00AM Nov 30, 2020USGS--Water Resources of the United StatesHERP1(plotting HGIRG) Graph Created (12:47AM Nov 28, 2020)ObservedForecast (issued 9:23AM Nov 27)Latest observed value: 1.78 ft at 11:45 PM EST 27-Nov-2020. Flood Stage is 7 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Swatara Creek near Hershey are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Harper Tavern Upstream Gauge Downstream Gauge Downstream Gauge - at Middletown
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 10
Flood Stage: 7
Action Stage: 6
Low Stage (in feet): 0

Historic Crests
(1) 26.80 ft on 09/08/2011
(2) 17.08 ft on 07/26/2018
(3) 16.12 ft on 06/29/2006
(4) 15.36 ft on 09/27/1975
(5) 14.43 ft on 01/25/1979
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.24 ft on 05/01/2020 (P)
(2) 8.52 ft on 11/02/2019 (P)
(3) 7.14 ft on 04/16/2019
(4) 9.24 ft on 08/14/2018
(5) 17.08 ft on 07/26/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.20 ft on 07/14/1983
(2) 1.40 ft on 09/15/1980
(3) 1.40 ft on 08/15/1987
(4) 1.44 ft on 09/12/1977
(5) 1.44 ft on 07/17/1988

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
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
27 FEMA 0.2% Annual Chance Flood Level (500-year flood).
26.8 Flood of record from the flooding in September, 2011. Maximum recordable gage height (stage sensor operational limit). Water levels above this stage will not be reported in real time.
20 FEMA 1% Annual Chance Flood Level (100-year flood).
18 Flood waters begin to reach the Route 39 Bridge (Hershey Road) northwest of Hershey. FEMA 2% Annual Chance Flood Level (50-year flood).
16 Numerous homes adjacent to the creek are affected by high water.
14 Numerous homes adjacent to the creek are affected by high water.
12 High water affects several homes upstream of the Route 39 bridge. FEMA 10% Annual Chance Flood Level (10-year flood).
10 A few homes adjacent to the creek upstream of the Route 39 bridge flood.
8 The right, or north bank overflows. Several roads are affected.
7 The right, or north bank begins to overflow. Several roadways upstream of the gage are affected by high water.
Photos
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream
About This Location Collapse

Latitude: 40.298333° N, Longitude: 76.668056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 7 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 325.94 332.94 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: 30-Oct-2020 4:10 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities