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Ellsworth Sourcewater Protection Plan December 2004 Rev. September 2005 Page 5 of 63

Table 1 – Branch Lake Surface Area Maximum Depth Mean Depth Direct Drainage Area Entire Watershed Volume Flushing Rate

Characteristics (VLMP data) 1094.0 hectares (2703.2 acres) 38 meters (124 ft) 12 meters (39 ft)

    • 60.59

      sq km (23.39 sq mi)

    • 80.70

      sq km (31.16 sq mi)

108,000,000 cubic meters (87609 acre-feet) 0.41 flushes/year

C. Sourcewater Protection Area The sourcewater protection area for Branch Lake encompasses the entire (direct and indirect) watershed, although the direct watershed has a higher priority for education, outreach and implementation activities.

D. Community Demographics and the Ellsworth Water Department The City of Ellsworth, settled in 1763, has a current population of 6,456 within an area of 93.8 square miles. The population density is 81.5 people per square mile of land. The City has been economically supported by lumbering, shipbuilding, industry and tourism in the past, with tourism continuing to play an important role. Eight state highways convene in Ellsworth. Today the City serves as the major service center of Hancock County, providing goods and services to approximately 60,000 people. In addition, the City provides services to approximately 4 million tourists each year, who are attracted to the Maine coast and nearby Acadia National Park.

The Water Department serves a population of approximately 3,300 residential customers, and numerous schools, churches, restaurants, hospitals and elderly care centers. The distribution system includes over 23 miles of main and 166 hydrants. The estimated average daily use is 400,000 GPD, with a peak of 800,000 GPD. The Water Department treats drinking water with direct filtration, corrosion control additives, chlorine and fluoride.

E. Sourcewater Inventory The Water Department has a single intake in Branch Lake. It is located on the western shore of the southern basin.

IV. Existing Sourcewater Protection Measures The Branch Pond Association (BPA) has been dedicated to protecting water quality in Branch Lake since 1980 through education and direct actions to reduce sources of pollution to the lake. A municipal group called the Ellsworth Water Supply Commission (formerly the Branch Lake Watershed Commission) actively protects Branch Lake

through ordinances and other planning and regulatory means. The Commission is to work in concert with the City Council, local groups and protect the drinking water supply, the overall water quality of Branch

mission of the stakeholders to Lake, and the

economic integrity years between the

of the watershed. A strong BPA, the City of Ellsworth and

alliance has been formed over many the Water Department (which is part of

the City). This team to the water quality recreational area on

has rallied on the occasion of many proposed and existing threats

of Branch


a parcel of

land in

Most recently, a proposed boat launch and the southern basin has been the focus of the

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