Lake Arrowhead (Ossipee Flowage)

Limerick, Waterboro, York, Maine
MIDAS 9715

Water Quality

These charts display the values of water quality indicators for this lake, compared to the range of values seen across all of Maine’s surveyed lakes . Color ramps represent the range of values across all lakes. Yellow diamonds display the mean values for this lake, as averaged across all sampling sites. Click on any diamond to view the data.

To further explore the statewide distribution of indicator values, click on the bar chart icon . The red lines on the histogram show data from one or more sampling stations for this lake – superimposed on the statewide distribution for the indicator.

NOTE: Where data are identical for multiple stations, those station numbers will be superimposed on each other on the histograms and may thus be difficult to differentiate from each other.

Understanding the Color Ramps & Column Charts »

An icon indicates that no data are available for this parameter at this lake.

Secchi Transparency (m): 122.4
Increasing transparency (m)

Chlorophyll-a (ppb): 134.2
Increasing chlorophyll (ppb)

Total Phosphorus (ppb): 150
Increasing phosphorus (ppb)

Color (SPU): 369
Increasing color (spu)

Alkalinity (mg/L): 117.6
Increasing alkalinity (mg/l)

pH: 190.54
Increasing pH

Conductivity (uS/cm): 124
Increasing conductivity (uS/cm)

DEP Water Quality Overviews

Brief summaries of water quality for this lake. Report(s) summarize data through 2018 for the sampling station(s) in this lake.

Click HERE for an explanation of these reports.

For more information about individual water quality measures, use the menu above.

2018 Reports

Understanding Water Quality

Find out more about how lake water quality is measured and why it matters.
Click here for more »

Depth Map

A printable depth map is not currently available