About the DataTitleMaine Lakes: Geographic & Morphometric InformationData ProviderSources: MDEP, MDIFW, GIS coverages. Compilers: P. Vaux, J. EntwoodProvider ContactProvider WebsiteData Compiler for KBVaux, P. and J. EntwoodDate uploaded to KBDecember 2010Date of most recent revision1/24/2014 (Name revision for MIDAS 1888 and perimeter revision for MIDAS 5400)First Year in Data SetN/AMost Recent Year in Data SetN/A# Years with DataN/A# Sites Sampled6044 lakesSpatial Data (projection & datum, if applicable)UTM zone 19. NAD 83AbstractThis data set contains morphometric and geographical information for Maine lakes. Also included is the Maine Department of Environmental Protection (MDEP) trophic state assessment for each surveyed lake. Most data are from MDEP and Maine Department of Inland Fisheries & Wildlife (MDIFW) data files. Lake areas, perimeters and elevations were derived from GIS coverages. Some data are unavailable for some lakes. The data set also contains (a) a general statement about lake water quality; (b) status of documented infestations of invasive aquatic plants; and (c) fisheries management type.NOTE: This is a multiple worksheet Excel file. You are currently viewing About the Data. Select the DATA tab at the bottom of this window to view the data worksheet. The individual fields in the DATA worksheet are described below, in the Data Fields section of this page. For assistance contact: contactus@lakesofmaine.org or 207-783-7733.Data Fields:Field Description:Lake Code (MIDAS)MIDAS lake code (text format)Lake Code (numeric)MIDAS lake code (numeric format)Lake NameLake name(s). Note that alternate names are included in parentheses.Area (acres)Lake area, in acresPerimeter (miles)Lake perimeter, in milesDepth_Mean (feet)Mean lake depth, in feetDepth_Max (feet)Maximum lake depth, in feetVolume (acrefeet)Lake volume, in acre-feetDirect Drainage Area (sq miles)Area of direct-drainage watershed, in square miles. The direct-drainage watershed is the land that drains directly into the lake and its tributaries; this excludes sections of the watershed that drain into upstream lakes.Total Drainage Area (sq miles)Total drainage area of the lake, in square miles. This area includes sections of the watershed that drain into lakes and ponds upstream of the subject lake.Flushing Rate (times/yr)Number of times that the water in the lake is (theoretically) replaced (by water inputs) during a year.Trophic CategoryTrophic category: OLIGOtrophic (low productivity), MESOtrophic (moderate productivity), EUTROphic (high productivity)Dam1= no functional dam present; 2 = dam has increased lake surface area by >50% of undammed situtation; 3 = dam has increased lake area by