Rivers in Maine

Aroostook River at Masardis

Aroostook County, MaineNWS MASM1USGS 01015800Caribou office

Below flood stage
2.15ftStage

Observed Tue, Sep 22, 2:15 AM EDT

Flood stage
17.00 ft
Forecast crest
2.10 ftTue, Sep 22, 8:00 AM EDT
Record crest
18.70 ft2009

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood20.00 ft
Moderate flood18.00 ft
Minor flood17.00 ft
Action15.50 ft
  1. 20.00 ftState Route 11 bridge across the St. Croix Stream is closed. Severe impact to structures along State Route 11 in Masardis.
  2. 18.00 ftGarfield Road closed at the bridge over the Aroostook River. Several structures along State Route 11 in Masardis impacted by floodwaters. Significant inundation of agricultural lands downstream of the St. Croix Stream in Masardis to the Butler Island Wildlife Management Area in Ashland.
  3. 17.00 ftMinor flooding along State Route 11 in Masardis and backwater flooding along the St. Croix Stream.
  4. 15.50 ftMinor flooding occurs in agricultural lands along the river from Downstream of the St. Croix Stream in Masardis to the Butler Island Wildlife Management Area in Ashland.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor floodingUnder 5%
Moderate floodingUnder 5%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 14, 2026.

Crest history

23 crests on NOAA’s list since 1958.

#DateStage
1April 9, 200918.70 ft
2May 1, 200818.33 ft
3April 16, 201418.17 ft
4April 18, 199418.00 ft
5April 19, 198317.70 ft
6April 30, 197316.95 ft
7April 5, 197616.81 ft
8April 30, 197916.76 ft
9December 23, 197416.68 ft
10April 28, 201816.57 ft
11December 23, 195816.44 ft
12April 25, 195816.30 ft
13April 3, 198716.28 ft
14April 22, 201916.19 ft
15April 24, 198216.08 ft
16May 16, 196116.03 ft
17April 26, 200715.29 ft
18December 20, 202314.83 ft
19April 20, 200814.75 ft
20April 18, 201714.17 ft
21April 15, 202414.09 ft
22April 17, 202213.29 ft
23October 27, 201713.19 ft

Most recent crests

  • April 15, 2024: 14.09 ft
  • December 20, 2023: 14.83 ft
  • April 17, 2022: 13.29 ft
  • April 22, 2019: 16.19 ft
  • April 28, 2018: 16.57 ft
  • October 27, 2017: 13.19 ft
  • April 18, 2017: 14.17 ft
  • April 16, 2014: 18.17 ft
  • April 9, 2009: 18.70 ft
  • May 1, 2008: 18.33 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Northeast River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.