Maine flood of 1987

Maine flood of 1987 The Maine flood of 1987 was a major spring flood that affected large portions of Maine during April and May 1987. Unusually warm temperatures, heavy precipitation, and rapid snowmelt combined to produce record high flows on rivers such as the Penobscot River, Kennebec River, and Androscoggin River, inundating towns, damaging infrastructure, and prompting state and federal emergency declarations. The event prompted responses from agencies including the Federal Emergency Management Agency, the United States Army Corps of Engineers, and the Maine Emergency Management Agency.

Background and meteorological causes

A persistent Nor’easter-like pattern in late winter and early spring 1987 brought successive storms tracked by the National Weather Service and the National Oceanic and Atmospheric Administration. A heavy winter snowpack across the Rangeley Lakes Region, Katahdin, and the Western Maine Lakes and Mountains combined with above-average temperatures associated with a transient North Atlantic Oscillation phase to accelerate snowmelt. Repeated rainfall events from systems monitored by the Storm Prediction Center and forecast by the Hydrometeorological Prediction Center fell on saturated soils and frozen ground, reducing infiltration and increasing runoff into tributaries of the Penobscot River basin and the Kennebec River watershed. River stage monitoring by the United States Geological Survey streamgages recorded rapid rises consistent with antecedent conditions described in hydrology studies from the USGS and University of Maine researchers.

Course of the flood and affected areas

Flooding began in late April and peaked in early May as flows propagated downstream from headwaters in the Northwoods, through river corridors including the Penobscot County and Piscataquis County reaches. Communities along the Penobscot River such as Bangor and Old Town experienced extensive inundation, while towns on the Kennebec River including Augusta and Waterville saw high water and breaches of local levees. The Androscoggin River caused flooding in Lewiston and Auburn, and coastal rivers including the Kennebunk River affected towns like Kennebunk and Saco. Transportation corridors such as Interstate 95 and U.S. Route 1 were disrupted, while flood stages recorded at USGS and National Weather Service river gages set or approached historical highs for numerous stations.

Impact and damages

The flood caused widespread property damage to residential neighborhoods, industrial sites, and municipal infrastructure across Penobscot County, Cumberland County, and Franklin County. Utility services operated by Central Maine Power and municipal waterworks were interrupted, and facilities such as mills in Rumford and paper mills in the Millinocket area sustained production losses. Agriculture in the Aroostook County river valleys suffered crop and livestock impacts, while cultural institutions in Bangor and Augusta faced damage to historical collections. Economic assessments by the Maine Department of Transportation, Maine Department of Agriculture, Conservation and Forestry, and the Small Business Administration estimated damages in the hundreds of millions of 1987 dollars, and fatalities and injuries were reported by local hospitals and coroners in counties including Penobscot County and Androscoggin County.

Emergency response and relief efforts

Local fire departments, police departments, and Maine National Guard units conducted evacuations, water rescues, and sandbagging operations in municipalities such as Bangor and Lewiston. The Federal Emergency Management Agency coordinated federal disaster declarations and public assistance programs, while the United States Army Corps of Engineers assessed levee integrity and temporary flood-control measures. Nonprofit organizations including the American Red Cross and Salvation Army provided shelters and relief supplies, and volunteer groups organized through institutions like the University of Maine Cooperative Extension assisted with community support. Legislative representatives from Maine's 1st congressional district and Maine's 2nd congressional district sought federal aid and worked with the United States Congress and the Small Business Administration to secure disaster loans and funding.

Recovery, mitigation, and long-term effects

In the aftermath, state agencies including the Maine Emergency Management Agency and the Maine Department of Transportation undertook infrastructure repair, bridge reconstruction, and floodplain mapping updates in coordination with the United States Geological Survey and the Federal Emergency Management Agency's flood insurance and mitigation programs. The flood prompted revisions to municipal zoning in towns such as Bangor and Augusta, spurred investment in flood control projects by the United States Army Corps of Engineers, and influenced research at institutions like the University of Maine on watershed management and hydraulic modeling. Long-term effects included changes to emergency planning by the Maine National Guard and enhancements to river gaging networks operated by the USGS and National Weather Service. The event remains a reference point in state hazard mitigation plans and in studies by organizations such as the American Society of Civil Engineers and regional planning commissions.

Category:1987 natural disasters in the United States Category:Floods in the United States Category:History of Maine