where accepted common names do not exist. Taxonomic names of all species 

 mentioned are given in the appendix to chapter 1. 



Lacustrine systems are ecological components of the coastal ecosystem and they 

 and their interaction with other habitats must be considered in the long-range 

 planning, development, and management of the renewable natural resources of 

 coastal Maine. 



DATA SOURCES AND COMPILATION OF DATA 



Locational data on the lacustrine system were derived primarily from the 

 preliminary results of the National Wetlands Inventory (NWl) of the U.S. Fish 

 and Wildlife Service (FWS) . The lakes of the coastal zone are mapped on atlas 

 map 1. Locations of lakes that supply municipal water were obtained from 

 Maine Department of Human Resources. 



Biological and physical data on the named lakes were derived from the 

 following sources. Lake identification numbers ("MIDAS numbers"), and 

 elevation-above-sea-level data were acquired from Maine Department of Inland 

 Fisheries and Wildlife (MDIFW; MIDAS computer file 906Z) . Data on fisheries 

 and water quality also were obtained from MDIFW files. MDIFW (1975) lake- 

 survey leaflets for 172 lakes provided bath3rmetric maps, lists of fish 

 species, and statements on fisheries management. Fisheries appraisals for 151 

 lakes were obtained from Hutchinson (1977a, b, and c), Hutchinson and Spencer 

 (1975a, b, c, and d) , and Spencer and Hutchinson (1974a, b, c, and d) . Maps 

 of the presence of anadromous fish species were acquired from the Maine State 

 Planning Office (MSPO; 1977). That office also provided maps of lake 

 management capabilities, recreational facilities and activities, and land 

 cover types around the lakes. Water-quality information for 37 lakes was 

 obtained from Maine Department of Environmental Protection (DEP; Division of 

 Lakes and Biological Studies). These data had come from several sources, 

 including the Cobbossee Water District (CWD) and the DEP Lay Monitoring 

 Program. Additional data for region 2 came from Cortell and coworkers 

 (1973); data for Branch, Green and Brewer lakes from Cowing and Scott (1975, 

 1976, 1977, and in preparation ) , and additional data for Branch Lake from 

 Dewick (1973). The files of the Maine Pesticide Control Board provided 

 information on pesticide (e.g., algicide) use in and around the lakes. 

 Information on areas of the coastal region sprayed for spruce budworm control 

 was acquired from the Maine Bureau of Forestry at Old Town. Data collected in 

 1938, 1941, and 1942 for 59 of the lakes in regions 2 to 5 were obtained from 

 Cooper (1939 and 1942) and Fuller and Cooper (1946). In addition to 

 temperature and oxygen profiles, and pH and phosphorus data, the Cooper 

 references provided data on plankton and benthos, plus extensive fisheries 

 information, including growth rates of fishes. 



DISTRIBUTION OF THE LACUSTRINE SYSTEM 



The lacustrine system of the coastal zone comprises a total area of 

 approximately 57,537 acres (23,294 ha; table 7-1). A total of 215 lacustrine 

 systems are named on U.S. Geological Survey (USGS) quadrangle sheets or quads 

 (atlas map 1). These comprise >98% of the area of the lacustrine system. 

 (Available physical data on named lakes are given in tables 7-2 and 7-3 and 

 appendix table 1. Available data on chemical characteristics of named coastal 

 zone lakes are given in table 7-4 and in appendix table 2.) 



7-2 



