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Swatara Creek at Middletown, PA (MTLP1)

Data Type




Inundation Levels
NAVD88 Stage

309.230.6
307.829.2
306.728.1
305.026.4
303.024.4
Record Crest: 23.29 ft
301.122.5
299.621.0
298.620.0
297.819.2
296.918.3
Major Flooding Begins

296.017.4
294.716.1
293.915.3
Moderate Flooding Begins

293.214.6
291.512.9
289.911.3
Minor Flooding Begins


Near Flooding Begins


Below Flooding Begins

* = Extended rating
Weather Forecast Office State College, PA Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download Inundation
Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
6.0 ft at 04/19/2024 16:15:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
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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.

Gauge Information Collapse

Map Overlays
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
(5) 13.46 ft on 09/03/2021
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.05 ft on 12/19/2023 (P)
(2) 13.37 ft on 02/05/2022
(3) 13.46 ft on 09/03/2021
(4) 13.68 ft on 12/26/2020
(5) 11.76 ft on 09/12/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:

The project report can be found here.
Flood Impacts 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
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.