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Geologic Site of the Month: Why Is Sebago Lake So Deep?
Why is Sebago Lake so deep? Maine Geological Survey Maine Geologic Facts and Localities February, 1999 Why is Sebago Lake so deep? 43° 51‘ 13.36“ N, 70° 33‘ 43.98“ W Text by Robert A. Johnston Maine Geological Survey, Department of Agriculture, Conservation & Forestry 1 Why is Sebago Lake so deep? Maine Geological Survey Introduction Modern geophysical equipment allows geologists to investigate previously unmapped environments, including ocean and lake floors. Recent geophysical research studied the types, composition, areal extent, and thickness of sediments on the bottom of Sebago Lake in southwestern Maine. Geologists used side- scan sonar and seismic reflection profiling to map the bottom of the lake. Approximately 58 percent of the lake bottom was imaged with side-scan sonar and over 60 miles of seismic reflection profiles were collected. This web site will discuss the findings of the seismic reflection profiling. Maine Geological Survey, Department of Agriculture, Conservation & Forestry 2 Why is Sebago Lake so deep? Maine Geological Survey Physiographic setting Sebago Lake, although second in surface area to Moosehead Lake, is Maine's deepest lake. With a water depth of 316 feet, its deepest part is 49 feet below sea level! Sebago Lake is located in southwestern Maine 20 miles northwest of Portland and 50 miles southeast of the White Mountains. It lies along the transition between the Central Highlands and the Coastal Lowlands physiographic regions of New England (Figure 1). The abrupt change in landscape can be seen in panoramic views from several vantage points near Sebago Lake. Denny, 1982 Denny, Maine Geological Survey From From Figure 1. -
Total Phosphorus Loads for Selected Tributaries to Sebago Lake, Maine
science for a changing world Total Phosphorus Loads for Selected Tributaries to Sebago Lake, Maine Water-Resources Investigations Report 01-4003 V Prepared in cooperation with the Portland Water District U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior U.S. Geological Survey By Glenn A. Hodgkins Water-Resources Investigations Report 01-4003 Prepared in cooperation with the Portland Water District Augusta, Maine 2001 U.S. DEPARTMENT OF THE INTERIOR GALE A. NORTON, Secretary U.S. GEOLOGICAL SURVEY Charles G. Groat, Director The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government. For additional information write to: Copies of this report can be purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Branch of Information Services 26 Ganneston Dr. Box 25286, Federal Center Augusta, ME 04330 Denver, CO 80225 http://me.water.usgs.gov CONTENTS Abstract.................................................................................... 1 Introduction................................................................................. 2 Description of the study area.................................................................... 2 Data collection and analysis .................................................................... 2 Data-collection networks in the Sebago Lake Basin.......................................... 2 Adequacy of current stream-gaging network .............................................. -
Inventory of Lake Studies in Maine
University of Southern Maine USM Digital Commons Maine Collection 7-1973 Inventory of Lake Studies in Maine Charles F. Wallace Jr. James M. Strunk Follow this and additional works at: https://digitalcommons.usm.maine.edu/me_collection Part of the Biology Commons, Environmental Health Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Hydrology Commons, Marine Biology Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, Other Life Sciences Commons, and the Terrestrial and Aquatic Ecology Commons Recommended Citation Wallace, Charles F. Jr. and Strunk, James M., "Inventory of Lake Studies in Maine" (1973). Maine Collection. 134. https://digitalcommons.usm.maine.edu/me_collection/134 This Book is brought to you for free and open access by USM Digital Commons. It has been accepted for inclusion in Maine Collection by an authorized administrator of USM Digital Commons. For more information, please contact [email protected]. INVENTORY OF LAKE STUDIES IN MAINE By Charles F. Wallace, Jr. and James m. Strunk ,jitnt.e of ~lame Zfrxemtiue ~epnrlmeut ~fate Jhtuuiug ®£fit£ 189 ~fate ~treet, !>ugusht, ~nine 04330 KENNETH M. CURTIS WATER RESOURCES PLANNING GOVERNOR 16 WINTHROP STREET PHILIP M. SAVAGE TEL. ( 207) 289-3253 STATE PLANNING DIRECTOR July 16, 1973 Please find enclosed a copy of the Inventory of Lake Studies in Maine prepared by the Water Resources Planning Unit of the State Planning Office. We hope this will enable you to better understand the intensity and dir ection of lake studies and related work at various private and institutional levels in the State of Maine. Any comments or inquiries, which you may have concerning its gerieral content or specific studies, are welcomed. -
The Maine Lake Science Center – Now a Reality by Peter Lowell LEA Board Votes to Buy the Science Center Property
Testing Buoy on Highland Lake The 2014 Milfoil Bill LEA Education Programs The buoy is large and yellow with solar More than a decade after the original are designed to create opportunities for panels mounted on it. There are two “Milfoil Bill” passed the Maine Legislature, life-long learning through place-based round mooring buoys near it that are a new bill will significantly modify a curricula offered in partnership with attached to anchors. long-standing funding inequity. local public schools and community Page 4 By Peter Lowell, Page 8 members. Page 10 Summer 2014 Free LEA Lake News The Maine Lake Science Center – Now a Reality by Peter Lowell LEA Board Votes to Buy the Science Center Property As kids growing up on Highland Lake, we never saw algae clouds that look like green cotton candy. The sand and gravel of the lake bottom was always clean and the rocks were clear of sediment. Unfortunately, these simple indicators of water quality decline are now widespread. Our work over 43 years has led us to conclude that Maine lakes are degrading because of continued watershed development and decline is being accelerated by climate change. All of our lakes have changed over the past few decades, and their future is certainly in doubt. For six years, LEA has studied the status of lake science and visiting lake centers around the country to learn their methods and establish relationships. LEA conducts more lake testing than anyone in Maine, and we feel that no one adequately understands the “tipping points” that lead to a decline in water quality. -
Water and Natural Resources
Water and Natural Resources State Goal: Water Resources: To protect the quality and manage the quantity of the State’s water resources, including lakes, aquifers, great ponds, estuaries, rivers, and coastal areas Natural Resources: To protect the State’s other critical natural resources, including without limitation, wetlands, wildlife and fisheries habitat, sand dunes, shorelands, scenic vistas, and unique natural areas. Introduction: This chapter provides a comprehensive inventory of Windham’s natural and water resources. Understanding these systems and assets is essential to encouraging both environmentally and economically sustainable land use decisions that insure the enjoyment and protection of these resources for future generations. Watersheds A watershed is defined generally as an area that drains into a waterway, such as a stream, river, surface water body or aquifer, and is delineated by both natural and man-made features. Watersheds are interconnected such that action taken in one part of a system can affect water quality further downstream in that system. All of Windham lies within the Casco Bay Watershed, which includes 945 miles and about a quarter of a million people. The town is also comprised of many smaller sub-watersheds associated with its lakes, ponds, wetlands, streams, and rivers. Some of these are located wholly within municipal boundaries and some are shared with neighboring communities. Windham also lies partially within the Sebago lake watershed, comprised of approximately 300,000 acres (450 square miles) across 23 towns. Sebago Lake is the public water supply for 11 towns within the Greater Portland area including Windham. A map displaying Windham’s watersheds and wetland systems is located below. -
Maine Lakes Report 2012
Maine Lakes Report 2012 Dear Friends of Maine Lakes, This report on the health of Maine lakes reflects the effort of more than 1,000 volunteer citizen scientists who monitored several hundred lake basins throughout the State in 2012. Many of them have been doing so continuously for decades, and a few have been involved for most of the 42 years since the Maine Legislature officially authorized volunteer lake monitoring. Their work is a strong testimony to the level of public commitment in Maine to our clear, clean lakes, and it is probably not coincidental that our lakes have remained as healthy as they have under the watch of these individuals. The Maine Volunteer Lake Monitoring Program (VLMP) is believed to be the longest-standing statewide citizen lake monitoring program in America, having been formed at about the time of the passage of the historic Federal Clean Water Act. The Mission of the Maine Volunteer Lake Monitoring Program is to help protect Maine lakes through widespread citizen participation in the gathering and dissemination of credible scientific information pertaining to lake health. The VLMP trains, certifies and provides technical support to hundreds of volunteers who monitor a wide range of indicators of water quality, assess watershed health and function, and screen lakes for invasive aquatic plants and animals. In addition to being the primary source of lake data in the State of Maine, VLMP volunteers benefit their local lakes by playing key stewardship and leadership roles in their communities. Our primary partners are the Maine Department of Environmental Protection (DEP) and the US Environmental Protection Agency, which provide a wide range of financial, technical and management support to the program. -
Sebago-Lake-Watershed-Newsletter
SUMMER 2017 Photo by John Stetson Portland Water District ● 225 Douglass Street ● Portland, Maine 04104-3553 ● 207.761.8310 ● www.pwd.org Recreational Believe It Water What’s Making Roger Lakes Like 3 Forecast 4or Not! 6 Watch 7 Waves? 8 Mosley 8 Less Lawn Silent Spring Comes to Sebago Lake By Paul Hunt You have likely heard of “Silent Sebago Lake. Fortunately for all of us that enjoy the lake today, the Maine Department of Inland Spring”, the 1962 book written in Fisheries and Wildlife (Maine IF&W) took Maine by Rachel Carson which decisive action to address the problem. alerted readers to the impact of is dramatic period in Sebago Lake’s history was described in a report entitled pesticides on the environment. “ e Sebago Lake Study.” Written by Stuart Maybe you have read it. DeRoche, a sheries biologist from Gorham, it was published in 1976 by the Maine IF&W According to Wikipedia: (then known as the Department of Fish and “Silent Spring was met with erce Game). According to the report, in 1957 the opposition by chemical companies, but average 4 year-old salmon in Sebago Lake it spurred a reversal in national pesticide was 19 inches long and weighed about 2 Stuart DeRoche stocking salmon in the Crooked River policy, led to a nationwide ban on DDT pounds. By 1963 there were far fewer salmon (Dichlorodiphenyltrichloroethane) being caught and the typical 4 year-old was concludes that the DDT wiped out the for agricultural uses, and inspired an just 15 inches long and weighed less than a minnows which starved out the salmon. -
Maine Inland Ice Fishing Laws : 1950 Maine Department of Inland Fisheries and Game
Maine State Library Digital Maine Inland Fisheries and Wildlife Law Books Inland Fisheries and Wildlife 1-1-1950 Maine Inland Ice Fishing Laws : 1950 Maine Department of Inland Fisheries and Game Follow this and additional works at: https://digitalmaine.com/ifw_law_books Recommended Citation Maine Department of Inland Fisheries and Game, "Maine Inland Ice Fishing Laws : 1950" (1950). Inland Fisheries and Wildlife Law Books. 69. https://digitalmaine.com/ifw_law_books/69 This Text is brought to you for free and open access by the Inland Fisheries and Wildlife at Digital Maine. It has been accepted for inclusion in Inland Fisheries and Wildlife Law Books by an authorized administrator of Digital Maine. For more information, please contact [email protected]. Maine INLAND ICE FISHING LAWS 1950 ICE FISHING LAWS GENERAL PROVISIONS Sec. 45. Ice fishing regulated. All inland waters of the state are closed to ice fishing except those which have been opened to fishing through the ice by rule and regulation of the commissioner. A person legally licensed may fish through the ice in the daytime with not more than 5 lines, set or otherwise, which shall be under the immediate supervision of such person, in any waters which have been opened to ice fishing by the commissioner. It shall be lawful to fish in the nighttime by using not more than 5 lines set or otherwise for cusk in the waters which have been opened to ice fishing by the commissioner for salmon, trout and togue. The commissioner may open other waters for fishing for cusk in the night time. FISHING LICENSES No resident of the State over 18 years of age and no non-resident over the age of 10 years can lawfully fish through the ice in any inland waters of the State, or transport any fish taken therefrom without a fishing license. -
Success on the Songo River and Brandy Pond!
Sediment Research MLSC - What’s up? Loons and Lead The mystery factor is climate change. The question is when LEA will move its While attacks from larger animals and Storms are intensifying and ice-out is offices to the new building. That will not boat strikes are sudden and obvious, lead coming much earlier, giving algae a longer happen since our year-round staff rely on poisoning is an insidious and deadly growing season. As we re-vamp our lake our Main Street building and its many killer. There are countless stories of loons protection standards ... Page 2 facilities. Page 5 dying... Page 10 Winter 2016 Free LEA Lake News Success on the Songo River and Brandy Pond! By Christian Oren After eleven summers of hard work, LEA is declaring victory in the battle against milfoil in the Songo River and Brandy Pond. When the project was first begun, huge patches of milfoil as big as football fields choked the entire length of the Songo. Now, boaters can pass through the river without ever seeing a single stalck of the plant. Never before has such a large and extensive invasive aquatic plant infestation been brought under control in the history of the State of Maine. The dozen or so infestations in Brandy Pond were also persistent, but seem to have been quelled by years of repeated harvesting. We declared victory on the Songo for two main reasons. First, the density of milfoil on the entire length of the river was much lower than we had seen in previous years. Even at the height of the growing season, there was only one plant for every 100 feet of shoreline, or less. -
Vacation Rental
Krainin Real Estate’s Vacation Rental This booklet contains important information that you will need during your vacation; please read it thoroughly when you arrive. www.krainin.com Emergency Numbers Although you don’t have to dial “1” first, most numbers are Long Distance. Raymond (655), Casco & South Casco (627), Naples (693), Sebago (787), Bridgton (647) and Poland (998) are local to each other. Gray (657), West Gray (428) and Windham (892, 893, 894) are local to Raymond. FOR EMERGENCIES, ALL COUNTIES!! ! 911 State Police & Game Warden!!!!800-228-0857 Cumberland County Sheriff non-emergency dispatch!!893-2810 Cumberland County Sheriff Admin Office!!!800-266-1444 Oxford County Sheriff non-emergency!!!800-733-1421 Poison Control !!!!!!800-222-1222 Central Maine Power outage!!!!800-696-1000 Hospitals & Clinics Bridgton!! Bridgton Hospital!, also Urgent Care, 10 Hospital Dr 647-6000 Gorham!! Mercy Express Care, 19 South Gorham Crossing!! 535-1400 Norway!! Stephens Memorial, 181 Main Street!!!!743-5933 Portland!! Maine Medical Center, 22 Bramhall Street!!!662-0111 Portland!! Mercy Hospital, 144 State Street!!!!!879-3000 Portland!! Brighton First Care, 335 Brighton Ave!!!!662-8000 Raymond! Raymond Redicare, 1278 Roosevelt Trail!!!655-6181 Windham! Mercy Express Care, at the Rotary 8am-8pm!! ! 400-8600 Westbrook! Mercy Westbrook, 40 Park Road!!!!!857-8000 Town ! Fire/Rescue ! Police !! Town Office Bridgton!! ! ! 911 or 647-8814!!911 or 647-8814!! 647-8786 Casco!!!!911!!! ! ! 911!! ! ! ! 627-4515 Denmark!!!911!!!!!911!!!!!452-2163 Frye Island!!!911!!!!!911 -
Cumulative Impacts to Environmental Conditions on the Presumpscot River and Its Shorelands
Cumulative Impacts to Environmental Conditions on the Presumpscot River and its Shorelands (DRAFT -- As distributed at the June 2002 Public Meetings) Title Page pictures Deleted due to large memory size. See separate file Prepared by the Presumpscot River Plan Steering Committee With Technical Assistance Provided by Land and Water Associates Hallowell, Maine And Funding and Assistance Provided by Casco Bay Estuary Project June 11, 2002 ADDENDUM April 18, 2003 Note on the Scope of Analysis for this Cumulative Impacts Report: The geographic scope of this analysis of cumulative impacts is the Presumpscot River from its outlet at Sebago Lake, including its tributaries and adjacent corridor lands, to and including the Casco Bay Estuary. This report addresses the impacts of the regulation of flows out of Sebago Lake at the Eel Weir Dam on the river and Casco Bay Estuary, since the flow regime on the river is almost entirely controlled by management of the Eel Weir Dam, and the Presumpscot River is the largest source of freshwater to Casco Bay. However, it does not include or address issues related to Sebago Lake levels. Comments received at the June 2002 public information meetings raised concerns about the impacts of flow regulation at the Eel Weir Dam on Sebago lake shorelands and wetlands. While it is acknowledged that the regulation of flows at the Eel Weir Dam has impacts not only on the river and estuary but also on Sebago Lake, these impacts are not addressed in this report, and there are no recommendations included in the report to change operations at the Eel Weir Dam. -
Gloeotrichia Echinulata Monitoring Report
2015 Gloeotrichia echinulata Monitoring Report February 1, 2016 Lakes Environmental Association 230 Main Street Bridgton, ME 04009 207-647-8580 [email protected] Project Summary A total of 30 sites on 24 lakes and ponds were monitored in the summer of 2015 for the blue-green algae known as Gloeotrichia echinulata, or “Gloeo”. Twenty sites were sampled once in late July or early August. The remaining ten sites were sampled 4 times, or roughly once per week, between July 15th and August 19th, with the exception of Moose Pond (main basin), which was sampled 5 times. The sites sam- pled more than once were on Long Lake (4 sites), Keoka Lake, McWain Pond, Moose Pond, Peabody Pond, Crystal Lake, and Middle Pond. The highest level of Gloeo recorded in 2015 was 192.4 colonies per liter in Moose Pond. The highest level in 2014 was 72.4 colonies per liter in Keoka Lake, and in 2013 it was 16.6 colonies per liter in Moose Pond. Moose Pond and the Harrison sample site on Long Lake’s north shore both saw large increases in Gloeo abundance in 2015 over previous years. However, the con- centrations at other sampling sites were similar or even less than in previous years. A late spring and slow warm-up in water temperatures may have affected Gloeo growth in 2015. Factors that Affect Gloeo Abundance Light Like many other species, Gloeo take biological cues from the intensity and duration of sun- light. Gloeo can only grow on sediments that are exposed to light. Lake bathymetry (the shape and contours of the lake bed) will control the area of the lake that is shallow enough for light to reach (known as the “littoral zone”).