Data Visualizations - "Vizzes"

Use these interactive Vizzes to delve into Maine's lakes! Learn about their plant & animal plant communities; water quality; and geography & landscape characteristics.

Each month we highlight one Viz (see right side of this page). New visualizations are added to this collection from time to time. Let us know if you have any suggestions for new Vizzes!

Flora

Maine's invasive aquatic plants: Documented infestations

Explore the distributions of 6 invasive plants in our lakes and rivers

Maine's invasive aquatic plants: Documented infestations

Milfoil species in Maine lakes

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

Milfoil species in Maine lakes

Fauna

Chinese mystery snail sightings

Records of the distribution of this invasive snail species, collected/compiled by LSM 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

Fish in Maine lakes: native minnows & introduced predators

Explore many aspects of Maine’s lake fisheries in this Tableau ‘story-board’. There is plenty of interactivity, so take your time in exploring this resource!

Fish in Maine lakes: native minnows & introduced predators

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

3 of Maine’s 10 native freshwater mussel species are listed as Threatened. See where they are!

Freshwater mussels - species distributions

Loon counts: Audubon surveys

For over 34 years, citizen scientists have helped collect invaluable data that has allowed Maine Audubon to chart the progress of the state’s loon population over time. Explore an interactive map for Loon Count results on Maine's lakes from 1983 through today. Zoom in to an area to see lake pins. Then click on a pin to see the loon data. Alternatively, search by lake name.

Loon counts: Audubon surveys

Water Quality

Maine's 50 clearest-water lakes in 2017

Use this interactive graphic to explore where the 50 lakes with the highest Secchi transparencies are located

Maine's 50 clearest-water lakes in 2017

Secchi transparency in Maine lakes

Explore water transparency in over 1000 lakes across Maine

Secchi transparency in Maine lakes

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 & LSM.

Secchi data - overall mean values

Water chemistry data - overall mean values

Explore an interactive map showing water chemistry data in over 1000 Maine lakes.

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.

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 LSM 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

Map shows the depths of 1802 Maine lakes for which measurements exist.

Lake maximum depths




Viz-of-the-Month

Maine's 50 clearest-water lakes in 2017

Use this interactive graphic to explore where the 50 lakes with the highest Secchi transparencies are located.


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.