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Hydrograph River at a Glance Download
Merrimack River at Lawrence Stage (ft)Observed: 8.11 ft at 9:15AM Oct 13, 2019Observed: 8.09 ft at 9:30AM Oct 13, 2019Observed: 8.06 ft at 9:45AM Oct 13, 2019Observed: 8.05 ft at 10:00AM Oct 13, 2019Observed: 8.04 ft at 10:15AM Oct 13, 2019Observed: 8.03 ft at 10:30AM Oct 13, 2019Observed: 8.03 ft at 10:45AM Oct 13, 2019Observed: 8.03 ft at 11:00AM Oct 13, 2019Observed: 8.02 ft at 11:15AM Oct 13, 2019Observed: 8.03 ft at 11:30AM Oct 13, 2019Observed: 8.03 ft at 11:45AM Oct 13, 2019Observed: 8.03 ft at 12:00PM Oct 13, 2019Observed: 8.02 ft at 12:15PM Oct 13, 2019Observed: 8.02 ft at 12:30PM Oct 13, 2019Observed: 8.02 ft at 12:45PM Oct 13, 2019Observed: 8.02 ft at 1:00PM Oct 13, 2019Observed: 8.02 ft at 1:15PM Oct 13, 2019Observed: 8.06 ft at 1:30PM Oct 13, 2019Observed: 8.11 ft at 1:45PM Oct 13, 2019Observed: 8.19 ft at 2:00PM Oct 13, 2019Observed: 8.28 ft at 2:15PM Oct 13, 2019Observed: 8.38 ft at 2:30PM Oct 13, 2019Observed: 8.49 ft at 2:45PM Oct 13, 2019Observed: 8.6 ft at 3:00PM Oct 13, 2019Observed: 8.71 ft at 3:15PM Oct 13, 2019Observed: 8.81 ft at 3:30PM Oct 13, 2019Observed: 8.89 ft at 3:45PM Oct 13, 2019Observed: 8.96 ft at 4:00PM Oct 13, 2019Observed: 8.98 ft at 4:15PM Oct 13, 2019Observed: 8.99 ft at 4:30PM Oct 13, 2019Highest Observation: 9.01 ft at 4:45PM Oct 13, 2019Observed: 9 ft at 5:00PM Oct 13, 2019Observed: 8.97 ft at 5:15PM Oct 13, 2019Observed: 8.93 ft at 5:30PM Oct 13, 2019Observed: 8.87 ft at 5:45PM Oct 13, 2019Observed: 8.81 ft at 6:00PM Oct 13, 2019Observed: 8.75 ft at 6:15PM Oct 13, 2019Observed: 8.68 ft at 6:30PM Oct 13, 2019Observed: 8.62 ft at 6:45PM Oct 13, 2019Observed: 8.56 ft at 7:00PM Oct 13, 2019Observed: 8.52 ft at 7:15PM Oct 13, 2019Observed: 8.48 ft at 7:30PM Oct 13, 2019Observed: 8.46 ft at 7:45PM Oct 13, 2019Observed: 8.45 ft at 8:00PM Oct 13, 2019Observed: 8.43 ft at 8:15PM Oct 13, 2019Observed: 8.42 ft at 8:30PM Oct 13, 2019Observed: 8.41 ft at 8:45PM Oct 13, 2019Observed: 8.41 ft at 9:00PM Oct 13, 2019Observed: 8.4 ft at 9:15PM Oct 13, 2019Observed: 8.39 ft at 9:30PM Oct 13, 2019Observed: 8.38 ft at 9:45PM Oct 13, 2019Observed: 8.38 ft at 10:00PM Oct 13, 2019Observed: 8.38 ft at 10:15PM Oct 13, 2019Observed: 8.39 ft at 10:30PM Oct 13, 2019Observed: 8.38 ft at 10:45PM Oct 13, 2019Observed: 8.38 ft at 11:00PM Oct 13, 2019Observed: 8.38 ft at 11:15PM Oct 13, 2019Observed: 8.37 ft at 11:30PM Oct 13, 2019Observed: 8.37 ft at 11:45PM Oct 13, 2019Observed: 8.37 ft at 12:00AM Oct 14, 2019Observed: 8.37 ft at 12:15AM Oct 14, 2019Observed: 8.36 ft at 12:30AM Oct 14, 2019Observed: 8.36 ft at 12:45AM Oct 14, 2019Observed: 8.36 ft at 1:00AM Oct 14, 2019Observed: 8.36 ft at 1:15AM Oct 14, 2019Observed: 8.35 ft at 1:30AM Oct 14, 2019Observed: 8.35 ft at 1:45AM Oct 14, 2019Observed: 8.34 ft at 2:00AM Oct 14, 2019Observed: 8.31 ft at 2:15AM Oct 14, 2019Observed: 8.29 ft at 2:30AM Oct 14, 2019Observed: 8.26 ft at 2:45AM Oct 14, 2019Observed: 8.24 ft at 3:00AM Oct 14, 2019Observed: 8.21 ft at 3:15AM Oct 14, 2019Observed: 8.2 ft at 3:30AM Oct 14, 2019Observed: 8.19 ft at 3:45AM Oct 14, 2019Observed: 8.18 ft at 4:00AM Oct 14, 2019Observed: 8.18 ft at 4:15AM Oct 14, 2019Observed: 8.18 ft at 4:30AM Oct 14, 2019Observed: 8.17 ft at 5:45AM Oct 14, 2019Observed: 8.16 ft at 6:00AM Oct 14, 2019Observed: 8.16 ft at 6:15AM Oct 14, 2019Observed: 8.16 ft at 6:30AM Oct 14, 2019Observed: 8.16 ft at 6:45AM Oct 14, 2019Observed: 8.16 ft at 7:00AM Oct 14, 2019Observed: 8.16 ft at 7:15AM Oct 14, 2019Observed: 8.16 ft at 7:30AM Oct 14, 2019Observed: 8.16 ft at 7:45AM Oct 14, 2019Observed: 8.16 ft at 8:00AM Oct 14, 2019Observed: 8.16 ft at 8:15AM Oct 14, 2019Observed: 8.16 ft at 8:30AM Oct 14, 2019Observed: 8.19 ft at 8:45AM Oct 14, 2019Observed: 8.21 ft at 9:00AM Oct 14, 2019Observed: 8.22 ft at 9:15AM Oct 14, 2019Observed: 8.22 ft at 9:30AM Oct 14, 2019Observed: 8.24 ft at 9:45AM Oct 14, 2019Observed: 8.26 ft at 10:00AM Oct 14, 2019Observed: 8.27 ft at 10:15AM Oct 14, 2019Observed: 8.27 ft at 10:30AM Oct 14, 2019Observed: 8.27 ft at 10:45AM Oct 14, 2019Observed: 8.28 ft at 11:00AM Oct 14, 2019Observed: 8.28 ft at 11:15AM Oct 14, 2019Observed: 8.29 ft at 11:30AM Oct 14, 2019Observed: 8.32 ft at 11:45AM Oct 14, 2019Observed: 8.37 ft at 12:00PM Oct 14, 2019Observed: 8.43 ft at 12:15PM Oct 14, 2019Observed: 8.5 ft at 12:30PM Oct 14, 2019Observed: 8.56 ft at 12:45PM Oct 14, 2019Observed: 8.64 ft at 1:00PM Oct 14, 2019Observed: 8.71 ft at 1:15PM Oct 14, 2019Observed: 8.79 ft at 1:30PM Oct 14, 2019Observed: 8.86 ft at 1:45PM Oct 14, 2019Observed: 8.9 ft at 2:00PM Oct 14, 2019Observed: 8.93 ft at 2:15PM Oct 14, 2019Observed: 8.95 ft at 2:30PM Oct 14, 2019Observed: 8.96 ft at 2:45PM Oct 14, 2019Observed: 8.97 ft at 3:00PM Oct 14, 2019Observed: 8.98 ft at 3:15PM Oct 14, 2019Observed: 8.96 ft at 3:30PM Oct 14, 2019Observed: 8.93 ft at 3:45PM Oct 14, 2019Observed: 8.89 ft at 4:00PM Oct 14, 2019Observed: 8.84 ft at 4:15PM Oct 14, 2019Observed: 8.78 ft at 4:30PM Oct 14, 2019Observed: 8.71 ft at 4:45PM Oct 14, 2019Observed: 8.63 ft at 5:00PM Oct 14, 2019Observed: 8.55 ft at 5:15PM Oct 14, 2019Observed: 8.45 ft at 5:30PM Oct 14, 2019Observed: 8.36 ft at 5:45PM Oct 14, 2019Observed: 8.27 ft at 6:00PM Oct 14, 2019Observed: 8.19 ft at 6:15PM Oct 14, 2019Observed: 8.12 ft at 6:30PM Oct 14, 2019Observed: 8.06 ft at 6:45PM Oct 14, 2019Observed: 8.03 ft at 7:00PM Oct 14, 2019Observed: 7.99 ft at 7:15PM Oct 14, 2019Observed: 7.97 ft at 7:30PM Oct 14, 2019Observed: 7.96 ft at 7:45PM Oct 14, 2019Observed: 7.95 ft at 8:00PM Oct 14, 2019Observed: 7.97 ft at 8:15PM Oct 14, 2019Observed: 7.99 ft at 8:30PM Oct 14, 2019Observed: 8.03 ft at 8:45PM Oct 14, 2019Observed: 8.09 ft at 9:00PM Oct 14, 2019Observed: 8.16 ft at 9:15PM Oct 14, 2019Observed: 8.23 ft at 9:30PM Oct 14, 2019Observed: 8.29 ft at 9:45PM Oct 14, 2019Observed: 8.35 ft at 10:00PM Oct 14, 2019Observed: 8.38 ft at 10:15PM Oct 14, 2019Observed: 8.39 ft at 10:30PM Oct 14, 2019Observed: 8.4 ft at 10:45PM Oct 14, 2019Observed: 8.4 ft at 11:00PM Oct 14, 2019Observed: 8.41 ft at 11:15PM Oct 14, 2019Observed: 8.43 ft at 11:30PM Oct 14, 2019Observed: 8.43 ft at 11:45PM Oct 14, 2019Observed: 8.42 ft at 12:00AM Oct 15, 2019Observed: 8.38 ft at 12:15AM Oct 15, 2019Observed: 8.33 ft at 12:30AM Oct 15, 2019Observed: 8.29 ft at 12:45AM Oct 15, 2019Observed: 8.26 ft at 1:00AM Oct 15, 2019Observed: 8.25 ft at 1:15AM Oct 15, 2019Observed: 8.24 ft at 1:30AM Oct 15, 2019Observed: 8.25 ft at 1:45AM Oct 15, 2019Observed: 8.25 ft at 2:00AM Oct 15, 2019Observed: 8.24 ft at 2:15AM Oct 15, 2019Observed: 8.23 ft at 2:30AM Oct 15, 2019Observed: 8.23 ft at 2:45AM Oct 15, 2019Observed: 8.24 ft at 3:00AM Oct 15, 2019Observed: 8.28 ft at 3:15AM Oct 15, 2019Observed: 8.33 ft at 3:30AM Oct 15, 2019Observed: 8.38 ft at 3:45AM Oct 15, 2019Observed: 8.43 ft at 4:00AM Oct 15, 2019Observed: 8.49 ft at 4:15AM Oct 15, 2019Observed: 8.54 ft at 4:30AM Oct 15, 2019Observed: 8.58 ft at 4:45AM Oct 15, 2019Observed: 8.6 ft at 5:00AM Oct 15, 2019Observed: 8.61 ft at 5:15AM Oct 15, 2019Observed: 8.63 ft at 5:30AM Oct 15, 2019Observed: 8.63 ft at 5:45AM Oct 15, 2019Observed: 8.64 ft at 6:00AM Oct 15, 2019Observed: 8.65 ft at 6:15AM Oct 15, 2019Observed: 8.65 ft at 6:30AM Oct 15, 2019Observed: 8.66 ft at 6:45AM Oct 15, 2019Observed: 8.63 ft at 7:00AM Oct 15, 2019Observed: 8.6 ft at 7:15AM Oct 15, 2019Observed: 8.56 ft at 7:30AM Oct 15, 2019Observed: 8.52 ft at 7:45AM Oct 15, 2019Observed: 8.48 ft at 8:00AM Oct 15, 2019Observed: 8.43 ft at 8:15AM Oct 15, 2019Observed: 8.4 ft at 8:30AM Oct 15, 2019Observed: 8.39 ft at 8:45AM Oct 15, 2019Observed: 8.37 ft at 9:00AM Oct 15, 2019Observed: 8.36 ft at 9:15AM Oct 15, 2019Observed: 8.36 ft at 9:30AM Oct 15, 2019Observed: 8.36 ft at 9:45AM Oct 15, 2019Observed: 8.35 ft at 10:00AM Oct 15, 2019Observed: 8.36 ft at 10:15AM Oct 15, 2019Observed: 8.35 ft at 10:30AM Oct 15, 2019Observed: 8.37 ft at 10:45AM Oct 15, 2019Observed: 8.4 ft at 11:00AM Oct 15, 2019Observed: 8.43 ft at 11:15AM Oct 15, 2019Observed: 8.47 ft at 11:30AM Oct 15, 2019Observed: 8.5 ft at 11:45AM Oct 15, 2019Observed: 8.53 ft at 12:00PM Oct 15, 2019Observed: 8.54 ft at 12:15PM Oct 15, 2019Observed: 8.54 ft at 12:30PM Oct 15, 2019Observed: 8.54 ft at 12:45PM Oct 15, 2019Observed: 8.55 ft at 1:00PM Oct 15, 2019Observed: 8.55 ft at 1:15PM Oct 15, 2019Observed: 8.55 ft at 1:30PM Oct 15, 2019Observed: 8.56 ft at 1:45PM Oct 15, 2019Observed: 8.55 ft at 2:00PM Oct 15, 2019Observed: 8.55 ft at 2:15PM Oct 15, 2019Observed: 8.56 ft at 2:30PM Oct 15, 2019Observed: 8.56 ft at 2:45PM Oct 15, 2019Observed: 8.56 ft at 3:00PM Oct 15, 2019Observed: 8.57 ft at 3:15PM Oct 15, 2019Observed: 8.56 ft at 3:30PM Oct 15, 2019Observed: 8.54 ft at 3:45PM Oct 15, 2019Observed: 8.51 ft at 4:00PM Oct 15, 2019Observed: 8.49 ft at 4:15PM Oct 15, 2019Observed: 8.46 ft at 4:30PM Oct 15, 2019Observed: 8.43 ft at 4:45PM Oct 15, 2019Observed: 8.41 ft at 5:00PM Oct 15, 2019Observed: 8.4 ft at 5:15PM Oct 15, 2019Observed: 8.4 ft at 5:30PM Oct 15, 2019Observed: 8.39 ft at 5:45PM Oct 15, 2019Observed: 8.38 ft at 6:00PM Oct 15, 2019Observed: 8.38 ft at 6:15PM Oct 15, 2019Observed: 8.37 ft at 6:30PM Oct 15, 2019Observed: 8.37 ft at 6:45PM Oct 15, 2019Observed: 8.37 ft at 7:00PM Oct 15, 2019Observed: 8.36 ft at 7:15PM Oct 15, 2019Observed: 8.36 ft at 7:30PM Oct 15, 2019Observed: 8.35 ft at 7:45PM Oct 15, 2019Observed: 8.36 ft at 8:00PM Oct 15, 2019Observed: 8.39 ft at 8:15PM Oct 15, 2019Observed: 8.42 ft at 8:30PM Oct 15, 2019Observed: 8.46 ft at 8:45PM Oct 15, 2019Observed: 8.5 ft at 9:00PM Oct 15, 2019Observed: 8.52 ft at 9:15PM Oct 15, 2019Observed: 8.53 ft at 9:30PM Oct 15, 2019Observed: 8.54 ft at 9:45PM Oct 15, 2019Observed: 8.54 ft at 10:00PM Oct 15, 2019Observed: 8.54 ft at 10:15PM Oct 15, 2019Observed: 8.55 ft at 10:30PM Oct 15, 2019Observed: 8.55 ft at 10:45PM Oct 15, 2019Observed: 8.56 ft at 11:00PM Oct 15, 2019Observed: 8.56 ft at 11:15PM Oct 15, 2019Observed: 8.56 ft at 11:30PM Oct 15, 2019Observed: 8.56 ft at 11:45PM Oct 15, 2019Observed: 8.55 ft at 12:00AM Oct 16, 2019Observed: 8.56 ft at 12:15AM Oct 16, 2019Observed: 8.56 ft at 12:30AM Oct 16, 2019Observed: 8.55 ft at 12:45AM Oct 16, 2019Observed: 8.52 ft at 1:00AM Oct 16, 2019Observed: 8.48 ft at 1:15AM Oct 16, 2019Observed: 8.45 ft at 1:30AM Oct 16, 2019Observed: 8.42 ft at 1:45AM Oct 16, 2019Observed: 8.4 ft at 2:00AM Oct 16, 2019Observed: 8.38 ft at 2:15AM Oct 16, 2019Observed: 8.37 ft at 2:30AM Oct 16, 2019Observed: 8.37 ft at 2:45AM Oct 16, 2019Observed: 8.36 ft at 3:00AM Oct 16, 2019Observed: 8.36 ft at 3:15AM Oct 16, 2019Observed: 8.36 ft at 3:30AM Oct 16, 2019Observed: 8.35 ft at 3:45AM Oct 16, 2019Observed: 8.35 ft at 4:00AM Oct 16, 2019Observed: 8.34 ft at 4:15AM Oct 16, 2019Observed: 8.33 ft at 4:30AM Oct 16, 2019Observed: 8.33 ft at 4:45AM Oct 16, 2019Observed: 8.33 ft at 5:00AM Oct 16, 2019Observed: 8.32 ft at 5:15AM Oct 16, 2019Observed: 8.32 ft at 5:30AM Oct 16, 2019Observed: 8.32 ft at 5:45AM Oct 16, 2019Observed: 8.32 ft at 6:00AM Oct 16, 2019Observed: 8.32 ft at 6:15AM Oct 16, 2019Observed: 8.32 ft at 6:30AM Oct 16, 2019Observed: 8.32 ft at 6:45AM Oct 16, 2019Observed: 8.32 ft at 7:00AM Oct 16, 2019Observed: 8.32 ft at 7:15AM Oct 16, 2019Observed: 8.32 ft at 7:30AM Oct 16, 2019Observed: 8.32 ft at 7:45AM Oct 16, 2019Observed: 8.32 ft at 8:00AM Oct 16, 2019Observed: 8.31 ft at 8:15AM Oct 16, 2019Observed: 8.31 ft at 8:30AM Oct 16, 2019USGS--Water Resources of the United StatesLAWM3(plotting HGIRG) Graph Created (9:00AM Oct 16, 2019)ObservedLatest observed value: 8.31 ft at 8:30 AM EDT 16-Oct-2019. Flood Stage is 24 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Gauge reading affected by power generation.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Merrimack River at Lawrence are issued as needed during times of high water, but are not routinely available.

Vertical datum height surveyed by the USGS

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 34
Moderate Flood Stage: 29
Flood Stage: 24
Action Stage: 22
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

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
36 This is a major, life threatening flood. People in flood prone areas should prepare to evacuate. Follow the directions of local officials. Serious flood impacts are expected at some factories along the river. In addition, major backwater flooding is expected on the lower Shawsheen River in Lawrence, North Andover and Andover. Know alternate routes of travel to avoid flooded areas, and bridges that may be shut down.
34 Flooding occurs on low lying roads and homes, as well as lower levels of buildings along the river's historic industrial corridor. This includes portions of Riverview Street and 90 Sutton Street in North Andover, and the Riverwalk Complex in Lawrence. Substantial backwater flooding is expected on the lower Shawsheen River in Lawrence, North Andover and Andover. This includes Route 114 at I-495 Exit 42 and Mass Ave and Commonwealth Ave at I-495.
32 Moderate flooding is expected in Lawrence and North Andover. Some roads and homes along the river, as well as lower levels of factory buildings and low lying parking lots along the river's historic industrial corridor, are expected to experience flooding. In North Andover, North Main Street and Riverview as well as 90 Sutton Street are impacted. Backwater flooding on the lower Shawsheen River is expected in Lawrence, North Andover and Andover.
30 Lowland floodnig is expected along the Merrimack River near Lawrence. This will affect some businesses along the river.
29 Floodwaters affect some businesses and parking lots in Lawrence and North Andover. In North Andover, the Merrimack River affects properties in the vicnity of North Main Street and Riverview, as well as 90 Sutton Street. Backwater flooding into the lower Shawsheen River is expected in Lawrence, North Andover and Andover. Areas affected by backwater flooding include Route 114 nearest to the river, Mass Ave at I-495, and homes in the vicinity of Glenwood, Elmwood and Fernwood Streets.
28 Lowland flooding is expected along the Merrimack River near Lawrence. This will affect some businesses and associated parking lots along the river. Backwater flooding along the Shawsheen River may result in flood impacts along lower Glenwood Street in North Andover, as well as businesses on Route 114 on the Lawrence-North Andover town line that are adjacent to the river.
26 Minor lowland flooding is expected along the Merrimack River near Lawrence. This will affect some businesses along the river susceptible to basement flooding. In addition, backwater flooding may occur in the lower Shawsheen River area in Lawrence and North Andover. First imapcts include very lowest lying parking lots for businesses on Route 114 adjacent to the river.
24 Minor lowland flooding is expected along the Merrimack River near Lawrence. This will affect some businesses along the river susceptible to basement flooding. In addition, backwater flooding may occur along the lower Shawsheen River in Lawrence and North Andover. First impacts include very lowest lying parking lot flooding for businesses on Route 114 adjacent to the river.
About This Location Collapse

Latitude: 42.704722° N, Longitude: 71.153056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 24 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 0.00 24.0 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
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.

Effective February 25 2016, the National Weather Service will transition to issuing high water River Stage Forecasts for the Merrimack River at Lawrence MA based on this real-time gage.
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
Boston / Norton Weather Forecast Office
46 Commerce Way
Norton, MA 02766
(508) 622-3250
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Page last modified: 1-Mar-2019 12:35 AM
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