Maps

Explore our gallery of interactive maps! They display information about the flora, fauna, water quality & geography of Maine lakes. New maps are added as they become available.

Flora

Myriophyllum species distributions

This map displays the recorded distributions of 9 Myriophyllum species in Maine. The map includes both invasive and native species.
Myriophyllum species distributions

Invasive Aquatic Plants: Documented Infestations

Documented infestations of invasive aquatic plants in Maine lakes, as of date on map. Map is published by Maine DEP. A fully interactive map of the same data is available. Click the for more!
Invasive Aquatic Plants: Documented Infestations

Fauna

Chinese mystery snail sightings

Records of the distribution of this invasive snail species, collected/compiled by VLMP staff & volunteers.
Chinese mystery snail sightings

Crayfish species distribution maps

Documented species distribution maps for 8 species of crayfish in Maine.

Data are from multiple sources, as compiled by P. Vaux for the Maine Aquatic Biodiversity Project (MAPB, 2005).
Crayfish species distribution maps

Fish species in Maine lakes

Map displays fish species lists for each surveyed lake. Data are from IF&W (2007 data export). Fish species lists for some lakes may have changed since 2007 as a result of illegal stockings or natural range expansion. For more current data, consult maps on IF&W website.
Fish species in Maine lakes

Lake fish species distributions

Explore the ME IF&W fishing guide. This Google Earth file contains a number of map 'layers', including wild brook trout waters and fish species distributions.
Lake fish species distributions

Cooper lake surveys, with fish species lists

This map displays fish species recorded in Maine lakes during surveys conducted from 1938-1944 by G. Cooper and others.
Cooper lake surveys, with fish species lists

Freshwater mussels - species distributions

Explore a Google Earth map of freshwater mussel distributions in Maine.
Freshwater mussels - species distributions

Loon counts: Audubon surveys

Results of Maine Audubon's annual loon surveys (1983-2004)
Loon counts: Audubon surveys

Water Quality

Secchi data - overall mean values

Mean values of Secchi depth (a measure of water transparency) represent overall means across all years with data. Number of data years varies by lake. Data are courtesy of Maine DEP & VLMP.
Secchi data - overall mean values

Water chemistry data - overall mean values

Map to be published in May 2015
Water chemistry data - overall mean values

Number of years with lake data (Secchi, TP, Alk)

Map displays number of years for which data are available for the following water quality parameters in Maine lakes: Secchi transparency, phosphorus and alkalinity. (See map legend for more details.)
Number of years with lake data (Secchi, TP, Alk)

Near real-time water quality data for selected lakes

Map displays near real-time Secchi transparency data for selected Maine lakes. (Note: data collection & display are from a pilot VLMP project, started in 2014 and which will continue in 2015.)
Near real-time water quality data for selected lakes

Geography & Morphometry

Lake elevations, areas & depths

Elevation of Maine lakes (>= 10 acres surface area). Also displayed are lake areas, depths and town/county.
Lake elevations, areas & depths

Lake surface areas

Surface areas of Maine lakes, displayed in 6 size categories.
Lake surface areas

Lake maximum depths

Lake maximum depths

Lake ice-out dates

Check out 2015 ice-out dates for selected Maine lakes! Data provided by VLMP volunteers.
Lake ice-out dates




About these maps

Maps are based on available data. The amount of information used for these maps varies by map, depending on which lakes have been surveyed, when, and for what types of data. For example, comprehensive surveys of lake biota have not been conducted on all Maine lakes. Consequently, the geographic patterns shown in species distribution maps depend not only on where species live but also where samples have been collected. As more lakes are surveyed, the accuracy of each picture will improve.

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MIDAS
Maine Volunteer Lake Monitoring Program