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
 

Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.



Hydrograph River at a Glance Download
Manasquan River at Allenwood Stage (ft)Flow (kcfs)Observed: 10.54 ft at 5:30AM Sep 24, 2023Observed: 10.53 ft at 5:45AM Sep 24, 2023Observed: 10.52 ft at 6:00AM Sep 24, 2023Observed: 10.5 ft at 6:15AM Sep 24, 2023Observed: 10.49 ft at 6:30AM Sep 24, 2023Observed: 10.49 ft at 6:45AM Sep 24, 2023Observed: 10.5 ft at 7:00AM Sep 24, 2023Observed: 10.5 ft at 7:15AM Sep 24, 2023Observed: 10.49 ft at 7:30AM Sep 24, 2023Observed: 10.49 ft at 7:45AM Sep 24, 2023Observed: 10.5 ft at 8:00AM Sep 24, 2023Observed: 10.53 ft at 8:15AM Sep 24, 2023Observed: 10.54 ft at 8:30AM Sep 24, 2023Observed: 10.55 ft at 8:45AM Sep 24, 2023Observed: 10.56 ft at 9:00AM Sep 24, 2023Observed: 10.59 ft at 9:15AM Sep 24, 2023Observed: 10.63 ft at 9:30AM Sep 24, 2023Observed: 10.66 ft at 9:45AM Sep 24, 2023Observed: 10.69 ft at 10:00AM Sep 24, 2023Observed: 10.71 ft at 10:15AM Sep 24, 2023Observed: 10.74 ft at 10:30AM Sep 24, 2023Observed: 10.79 ft at 10:45AM Sep 24, 2023Observed: 10.83 ft at 11:00AM Sep 24, 2023Observed: 10.87 ft at 11:15AM Sep 24, 2023Observed: 10.9 ft at 11:30AM Sep 24, 2023Observed: 10.94 ft at 11:45AM Sep 24, 2023Observed: 10.99 ft at 12:00PM Sep 24, 2023Observed: 11.04 ft at 12:15PM Sep 24, 2023Observed: 11.08 ft at 12:30PM Sep 24, 2023Observed: 11.11 ft at 12:45PM Sep 24, 2023Observed: 11.16 ft at 1:00PM Sep 24, 2023Observed: 11.21 ft at 1:15PM Sep 24, 2023Observed: 11.26 ft at 1:30PM Sep 24, 2023Observed: 11.3 ft at 1:45PM Sep 24, 2023Observed: 11.34 ft at 2:00PM Sep 24, 2023Observed: 11.39 ft at 2:15PM Sep 24, 2023Observed: 11.44 ft at 2:30PM Sep 24, 2023Observed: 11.49 ft at 2:45PM Sep 24, 2023Observed: 11.54 ft at 3:00PM Sep 24, 2023Observed: 11.58 ft at 3:15PM Sep 24, 2023Observed: 11.86 ft at 4:30PM Sep 24, 2023Observed: 11.91 ft at 4:45PM Sep 24, 2023Observed: 11.97 ft at 5:00PM Sep 24, 2023Observed: 12.03 ft at 5:15PM Sep 24, 2023Observed: 12.08 ft at 5:30PM Sep 24, 2023Observed: 12.13 ft at 5:45PM Sep 24, 2023Observed: 12.16 ft at 6:00PM Sep 24, 2023Observed: 12.2 ft at 6:15PM Sep 24, 2023Observed: 12.24 ft at 6:30PM Sep 24, 2023Observed: 12.28 ft at 6:45PM Sep 24, 2023Observed: 12.31 ft at 7:00PM Sep 24, 2023Observed: 12.34 ft at 7:15PM Sep 24, 2023Observed: 12.37 ft at 7:30PM Sep 24, 2023Observed: 12.39 ft at 7:45PM Sep 24, 2023Observed: 12.41 ft at 8:00PM Sep 24, 2023Observed: 12.43 ft at 8:15PM Sep 24, 2023Observed: 12.44 ft at 8:30PM Sep 24, 2023Observed: 12.45 ft at 8:45PM Sep 24, 2023Observed: 12.45 ft at 9:00PM Sep 24, 2023Highest Observation: 12.46 ft at 9:15PM Sep 24, 2023Highest Observation: 12.46 ft at 9:30PM Sep 24, 2023Highest Observation: 12.46 ft at 9:45PM Sep 24, 2023Observed: 12.44 ft at 10:00PM Sep 24, 2023Observed: 12.43 ft at 10:15PM Sep 24, 2023Observed: 12.41 ft at 10:30PM Sep 24, 2023Observed: 12.4 ft at 10:45PM Sep 24, 2023Observed: 12.38 ft at 11:00PM Sep 24, 2023Observed: 12.35 ft at 11:15PM Sep 24, 2023Observed: 12.32 ft at 11:30PM Sep 24, 2023Observed: 12.29 ft at 11:45PM Sep 24, 2023Observed: 12.26 ft at 12:00AM Sep 25, 2023Observed: 12.23 ft at 12:15AM Sep 25, 2023Observed: 12.19 ft at 12:30AM Sep 25, 2023Observed: 12.15 ft at 12:45AM Sep 25, 2023Observed: 12.11 ft at 1:00AM Sep 25, 2023Observed: 12.06 ft at 1:15AM Sep 25, 2023Observed: 12.02 ft at 1:30AM Sep 25, 2023Observed: 11.99 ft at 1:45AM Sep 25, 2023Observed: 11.93 ft at 2:00AM Sep 25, 2023Observed: 11.88 ft at 2:15AM Sep 25, 2023Observed: 11.84 ft at 2:30AM Sep 25, 2023Observed: 11.8 ft at 2:45AM Sep 25, 2023Observed: 11.76 ft at 3:00AM Sep 25, 2023Observed: 11.72 ft at 3:15AM Sep 25, 2023Observed: 11.67 ft at 3:30AM Sep 25, 2023Observed: 11.63 ft at 3:45AM Sep 25, 2023Observed: 11.59 ft at 4:00AM Sep 25, 2023Observed: 11.56 ft at 4:15AM Sep 25, 2023Observed: 11.51 ft at 4:30AM Sep 25, 2023Observed: 11.47 ft at 4:45AM Sep 25, 2023Observed: 11.42 ft at 5:00AM Sep 25, 2023Observed: 11.38 ft at 5:15AM Sep 25, 2023Observed: 11.35 ft at 5:30AM Sep 25, 2023Observed: 11.32 ft at 5:45AM Sep 25, 2023Observed: 11.28 ft at 6:00AM Sep 25, 2023Observed: 11.23 ft at 6:15AM Sep 25, 2023Observed: 11.2 ft at 6:30AM Sep 25, 2023Observed: 11.17 ft at 6:45AM Sep 25, 2023Observed: 11.14 ft at 7:00AM Sep 25, 2023Observed: 11.1 ft at 7:15AM Sep 25, 2023Observed: 11.06 ft at 7:30AM Sep 25, 2023Observed: 11.02 ft at 7:45AM Sep 25, 2023Observed: 11 ft at 8:00AM Sep 25, 2023Observed: 10.96 ft at 8:15AM Sep 25, 2023Observed: 10.92 ft at 8:30AM Sep 25, 2023Observed: 10.88 ft at 8:45AM Sep 25, 2023Observed: 10.84 ft at 9:00AM Sep 25, 2023Observed: 10.81 ft at 9:15AM Sep 25, 2023Observed: 10.78 ft at 9:30AM Sep 25, 2023Observed: 10.73 ft at 9:45AM Sep 25, 2023Observed: 10.69 ft at 10:00AM Sep 25, 2023Observed: 10.64 ft at 10:15AM Sep 25, 2023Observed: 10.61 ft at 10:30AM Sep 25, 2023Observed: 10.57 ft at 10:45AM Sep 25, 2023Observed: 10.52 ft at 11:00AM Sep 25, 2023Observed: 10.46 ft at 11:15AM Sep 25, 2023Observed: 10.41 ft at 11:30AM Sep 25, 2023Observed: 10.37 ft at 11:45AM Sep 25, 2023Observed: 10.33 ft at 12:00PM Sep 25, 2023Observed: 10.27 ft at 12:15PM Sep 25, 2023Observed: 10.21 ft at 12:30PM Sep 25, 2023Observed: 10.15 ft at 12:45PM Sep 25, 2023Observed: 10.11 ft at 1:00PM Sep 25, 2023Observed: 10.06 ft at 1:15PM Sep 25, 2023Observed: 10.01 ft at 1:30PM Sep 25, 2023Observed: 9.95 ft at 1:45PM Sep 25, 2023Observed: 9.89 ft at 2:00PM Sep 25, 2023Observed: 9.86 ft at 2:15PM Sep 25, 2023Observed: 9.82 ft at 2:30PM Sep 25, 2023Observed: 9.77 ft at 2:45PM Sep 25, 2023Observed: 9.72 ft at 3:00PM Sep 25, 2023Observed: 9.67 ft at 3:15PM Sep 25, 2023Observed: 9.64 ft at 3:30PM Sep 25, 2023Observed: 9.61 ft at 3:45PM Sep 25, 2023Observed: 9.57 ft at 4:00PM Sep 25, 2023Observed: 9.52 ft at 4:15PM Sep 25, 2023Observed: 9.48 ft at 4:30PM Sep 25, 2023Observed: 9.46 ft at 4:45PM Sep 25, 2023Observed: 9.44 ft at 5:00PM Sep 25, 2023Observed: 9.41 ft at 5:15PM Sep 25, 2023Observed: 9.38 ft at 5:30PM Sep 25, 2023Observed: 9.35 ft at 5:45PM Sep 25, 2023Observed: 9.35 ft at 6:00PM Sep 25, 2023Observed: 9.34 ft at 6:15PM Sep 25, 2023Observed: 9.33 ft at 6:30PM Sep 25, 2023Observed: 9.3 ft at 6:45PM Sep 25, 2023Observed: 9.28 ft at 7:00PM Sep 25, 2023Observed: 9.27 ft at 7:15PM Sep 25, 2023Observed: 9.27 ft at 7:30PM Sep 25, 2023Observed: 9.26 ft at 7:45PM Sep 25, 2023Observed: 9.24 ft at 8:00PM Sep 25, 2023Observed: 9.24 ft at 8:15PM Sep 25, 2023Observed: 9.26 ft at 8:30PM Sep 25, 2023Observed: 9.28 ft at 8:45PM Sep 25, 2023Observed: 9.29 ft at 9:00PM Sep 25, 2023Observed: 9.29 ft at 9:15PM Sep 25, 2023Observed: 9.29 ft at 9:30PM Sep 25, 2023Observed: 9.32 ft at 9:45PM Sep 25, 2023Observed: 9.35 ft at 10:00PM Sep 25, 2023Observed: 9.38 ft at 10:15PM Sep 25, 2023Observed: 9.39 ft at 10:30PM Sep 25, 2023Observed: 9.42 ft at 10:45PM Sep 25, 2023Observed: 9.46 ft at 11:00PM Sep 25, 2023Observed: 9.51 ft at 11:15PM Sep 25, 2023Observed: 9.56 ft at 11:30PM Sep 25, 2023Observed: 9.59 ft at 11:45PM Sep 25, 2023Observed: 9.62 ft at 12:00AM Sep 26, 2023Observed: 9.68 ft at 12:15AM Sep 26, 2023Observed: 9.73 ft at 12:30AM Sep 26, 2023Observed: 9.77 ft at 12:45AM Sep 26, 2023Observed: 9.79 ft at 1:00AM Sep 26, 2023Observed: 9.81 ft at 1:15AM Sep 26, 2023Observed: 9.85 ft at 1:30AM Sep 26, 2023Observed: 9.9 ft at 1:45AM Sep 26, 2023Observed: 9.93 ft at 2:00AM Sep 26, 2023Observed: 9.94 ft at 2:15AM Sep 26, 2023Observed: 9.96 ft at 2:30AM Sep 26, 2023Observed: 9.99 ft at 2:45AM Sep 26, 2023Observed: 10.02 ft at 3:00AM Sep 26, 2023Observed: 10.05 ft at 3:15AM Sep 26, 2023Observed: 10.06 ft at 3:30AM Sep 26, 2023Observed: 10.07 ft at 3:45AM Sep 26, 2023Observed: 10.09 ft at 4:00AM Sep 26, 2023Observed: 10.13 ft at 4:15AM Sep 26, 2023Observed: 10.15 ft at 4:30AM Sep 26, 2023Observed: 10.16 ft at 4:45AM Sep 26, 2023Observed: 10.17 ft at 5:00AM Sep 26, 2023Observed: 10.19 ft at 5:15AM Sep 26, 2023Observed: 10.22 ft at 5:30AM Sep 26, 2023Observed: 10.24 ft at 5:45AM Sep 26, 2023Observed: 10.25 ft at 6:00AM Sep 26, 2023Observed: 10.25 ft at 6:15AM Sep 26, 2023Observed: 10.26 ft at 6:30AM Sep 26, 2023Observed: 10.29 ft at 6:45AM Sep 26, 2023Observed: 10.3 ft at 7:00AM Sep 26, 2023Observed: 10.3 ft at 7:15AM Sep 26, 2023Observed: 10.3 ft at 7:30AM Sep 26, 2023Observed: 10.3 ft at 7:45AM Sep 26, 2023Observed: 10.31 ft at 8:00AM Sep 26, 2023Observed: 10.32 ft at 8:15AM Sep 26, 2023Observed: 10.31 ft at 8:30AM Sep 26, 2023Observed: 10.3 ft at 8:45AM Sep 26, 2023Observed: 10.29 ft at 9:00AM Sep 26, 2023Observed: 10.29 ft at 9:15AM Sep 26, 2023Observed: 10.29 ft at 9:30AM Sep 26, 2023Observed: 10.28 ft at 9:45AM Sep 26, 2023Observed: 10.26 ft at 10:00AM Sep 26, 2023Observed: 10.23 ft at 10:15AM Sep 26, 2023Observed: 10.23 ft at 10:30AM Sep 26, 2023Observed: 10.22 ft at 10:45AM Sep 26, 2023Observed: 10.2 ft at 11:00AM Sep 26, 2023Observed: 10.18 ft at 11:15AM Sep 26, 2023Observed: 10.15 ft at 11:30AM Sep 26, 2023Observed: 10.13 ft at 11:45AM Sep 26, 2023Observed: 10.12 ft at 12:00PM Sep 26, 2023Observed: 10.1 ft at 12:15PM Sep 26, 2023Observed: 10.07 ft at 12:30PM Sep 26, 2023Observed: 10.04 ft at 12:45PM Sep 26, 2023Observed: 10.01 ft at 1:00PM Sep 26, 2023Observed: 10 ft at 1:15PM Sep 26, 2023Observed: 9.98 ft at 1:30PM Sep 26, 2023Observed: 9.94 ft at 1:45PM Sep 26, 2023Observed: 9.9 ft at 2:00PM Sep 26, 2023Observed: 9.87 ft at 2:15PM Sep 26, 2023Observed: 9.86 ft at 2:30PM Sep 26, 2023Observed: 9.84 ft at 2:45PM Sep 26, 2023Observed: 9.81 ft at 3:00PM Sep 26, 2023Observed: 9.77 ft at 3:15PM Sep 26, 2023Observed: 9.75 ft at 3:30PM Sep 26, 2023Observed: 9.74 ft at 3:45PM Sep 26, 2023Observed: 9.72 ft at 4:00PM Sep 26, 2023Observed: 9.7 ft at 4:15PM Sep 26, 2023Observed: 9.67 ft at 4:30PM Sep 26, 2023Observed: 9.65 ft at 4:45PM Sep 26, 2023Observed: 9.65 ft at 5:00PM Sep 26, 2023Observed: 9.64 ft at 5:15PM Sep 26, 2023Observed: 9.61 ft at 5:30PM Sep 26, 2023Observed: 9.59 ft at 5:45PM Sep 26, 2023Observed: 9.57 ft at 6:00PM Sep 26, 2023Observed: 9.58 ft at 6:15PM Sep 26, 2023Observed: 9.57 ft at 6:30PM Sep 26, 2023Observed: 9.55 ft at 6:45PM Sep 26, 2023Observed: 9.53 ft at 7:00PM Sep 26, 2023Observed: 9.51 ft at 7:15PM Sep 26, 2023Observed: 9.51 ft at 7:30PM Sep 26, 2023Observed: 9.5 ft at 7:45PM Sep 26, 2023Observed: 9.48 ft at 8:00PM Sep 26, 2023Observed: 9.45 ft at 8:15PM Sep 26, 2023Observed: 9.43 ft at 8:30PM Sep 26, 2023Observed: 9.42 ft at 8:45PM Sep 26, 2023Observed: 9.41 ft at 9:00PM Sep 26, 2023Observed: 9.37 ft at 9:15PM Sep 26, 2023Observed: 9.26 ft at 10:30PM Sep 26, 2023Observed: 9.23 ft at 10:45PM Sep 26, 2023Observed: 9.21 ft at 11:00PM Sep 26, 2023Observed: 9.21 ft at 11:15PM Sep 26, 2023Observed: 9.19 ft at 11:30PM Sep 26, 2023Observed: 9.17 ft at 11:45PM Sep 26, 2023Observed: 9.13 ft at 12:00AM Sep 27, 2023Observed: 9.11 ft at 12:15AM Sep 27, 2023Observed: 9.11 ft at 12:30AM Sep 27, 2023Observed: 9.1 ft at 12:45AM Sep 27, 2023Observed: 9.07 ft at 1:00AM Sep 27, 2023Observed: 9.04 ft at 1:15AM Sep 27, 2023Observed: 9.02 ft at 1:30AM Sep 27, 2023Observed: 9.02 ft at 1:45AM Sep 27, 2023Observed: 9.01 ft at 2:00AM Sep 27, 2023Observed: 8.98 ft at 2:15AM Sep 27, 2023Observed: 8.95 ft at 2:30AM Sep 27, 2023Observed: 8.93 ft at 2:45AM Sep 27, 2023Observed: 8.93 ft at 3:00AM Sep 27, 2023Observed: 8.91 ft at 3:15AM Sep 27, 2023Observed: 8.89 ft at 3:30AM Sep 27, 2023Observed: 8.86 ft at 3:45AM Sep 27, 2023Observed: 8.84 ft at 4:00AM Sep 27, 2023Observed: 8.84 ft at 4:15AM Sep 27, 2023USGS--Water Resources of the United StatesALLN4(plotting HGIRG) Graph Created (5:18AM Sep 27, 2023)ObservedLatest observed value: 8.84 ft at 4:15 AM EDT 27-Sep-2023. Flood Stage is 14.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts are not available for the Manasquan River at Allenwood. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - at Squankum Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 17
Flood Stage: 14.5
Action Stage: 13
Low Stage (in feet): 0

Historic Crests
(1) 20.38 ft on 08/28/2011
(2) 16.97 ft on 10/14/2005
(3) 16.57 ft on 05/01/2014
(4) 16.56 ft on 05/28/2018
(5) 16.43 ft on 12/27/2012
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.22 ft on 11/25/2018
(2) 15.61 ft on 08/13/2018
(3) 16.56 ft on 05/28/2018
(4) 16.57 ft on 05/01/2014
(5) 16.43 ft on 12/27/2012
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: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
18 Flooding expands on Hospital and Lakewood-Allenwood Roads. The roads are closed.
17 Hospital Road and Lakewood-Allenwood Road are subject to partial or full lane closures.
14.5 Walking and riding trails as well as as parking lots are flooded in Allaire State Park.
13 The river overflows out of its banks and floods open land in Allaire State Park.
About This Location Collapse

Latitude: 40.146667° N, Longitude: 74.122222° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 14.5 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 Not Available 14.5 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
During winter months, cold and ice may result in inaccurate real-time stream stage and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.
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
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities