Data period: through 2022
Use the tabs below to view the different datasets.
________________________________________________________________________________________________________________
Secchi
Transparency
Secchi Disk Transparency
Plots
Temperature
& Oxygen
Profiles
Temperature & Dissolved Oxygen
Profiles
Most recent late summer (Aug. 1 -
Sept. 7) temperature and dissolved oxygen profile plots
Temperature and Dissolved Oxygen
Profile Data
Late summer only (Aug. 1 -
Sept. 7); limited to eight most recent profiles
Units: Temperature (TEMP) = °C; Dissolved
Oxygen (DO) = mg/L
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2015-08-25
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2016-08-25
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2017-08-24
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2017-09-14
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2018-08-20
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2022-08-01
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2022-08-15
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2022-09-08
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Depth (m)
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TEMP
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DO
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TEMP
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DO
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TEMP
|
DO
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TEMP
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DO
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TEMP
|
DO
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TEMP
|
DO
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TEMP
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DO
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TEMP
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DO
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0
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22.9
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8.3
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25.8
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8.4
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27.0
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7.8
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25.2
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8.3
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26.2
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8.5
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24.3
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8.1
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25.5
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8.5
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25.7
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8.0
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1
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22.2
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8.4
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25.7
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8.4
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26.6
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7.8
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25.1
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8.2
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26.1
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8.1
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24.3
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8.1
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25.1
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8.3
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25.6
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8.0
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2
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22.1
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8.4
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25.5
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8.4
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26.7
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7.8
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25.1
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8.1
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25.7
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8.2
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23.9
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8.1
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24.8
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8.3
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25.6
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8.0
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3
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22.1
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8.4
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25.5
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8.4
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26.3
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7.8
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25.1
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8.1
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21.9
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8.2
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23.8
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8.2
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24.7
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8.4
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25.6
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7.9
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4
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22.0
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8.3
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25.5
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8.3
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26.3
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7.7
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24.8
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8.0
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21.6
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8.5
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23.4
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8.1
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24.5
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8.4
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25.3
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7.7
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5
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22.0
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8.3
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25.1
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8.4
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24.4
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8.6
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22.0
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10.1
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21.3
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8.4
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22.8
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8.0
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24.4
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8.3
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23.0
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5.9
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6
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22.0
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8.3
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19.2
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11.0
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19.0
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10.5
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15.9
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10.1
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20.6
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8.4
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16.7
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6.1
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23.9
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8.1
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17.0
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4.4
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7
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|
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14.8
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9.9
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14.2
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9.0
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11.3
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7.9
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19.2
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8.3
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12.8
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4.9
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17.8
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6.9
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13.1
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2.3
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8
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13.6
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7.2
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12.9
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8.6
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9.0
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6.9
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18.5
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8.3
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11.2
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4.4
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14.6
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6.9
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10.3
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0.8
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9
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11.4
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5.3
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10.4
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6.4
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10.2
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6.8
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7.7
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5.9
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17.9
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8.3
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8.8
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4.4
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12.0
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5.0
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9.2
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0.5
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10
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10.0
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4.2
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9.5
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6.0
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9.4
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6.4
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7.0
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4.6
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16.8
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8.5
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8.2
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4.4
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10.1
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4.9
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|
|
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11
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9.5
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3.9
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9.1
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5.7
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9.1
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6.1
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6.6
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4.7
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15.4
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8.6
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7.2
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4.7
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9.7
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4.9
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|
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12
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9.0
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3.7
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8.8
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5.2
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8.9
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5.6
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6.2
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5.0
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14.5
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8.1
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6.7
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4.7
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8.7
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4.9
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13
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8.7
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3.0
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8.5
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4.1
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8.6
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5.2
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5.9
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5.3
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13.7
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7.9
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6.4
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4.6
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7.7
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4.8
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14
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8.4
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1.7
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8.3
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3.0
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8.4
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4.3
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5.7
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5.1
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12.5
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7.9
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6.2
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4.3
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7.3
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4.7
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|
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15
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8.3
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0.6
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8.2
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1.7
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8.2
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2.9
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5.6
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4.0
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11.7
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7.9
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6.1
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4.1
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7.1
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3.9
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|
|
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16
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|
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8.1
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0.7
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8.1
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1.7
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5.6
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3.9
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10.9
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7.8
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6.0
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3.9
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6.9
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2.9
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|
|
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17
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8.0
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0.1
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|
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8.1
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1.1
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5.6
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2.9
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10.0
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7.7
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5.9
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2.7
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6.8
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1.9
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18
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8.0
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0.2
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8.0
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0.1
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5.6
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1.5
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9.4
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7.1
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5.8
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1.1
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6.7
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0.6
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18
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8.0
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0.2
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8.0
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0.3
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5.6
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1.5
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9.4
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7.1
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5.8
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1.1
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6.7
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0.6
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19
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5.6
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0.9
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8.8
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6.9
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5.9
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1.4
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6.7
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0.4
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20
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5.6
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0.9
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8.7
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6.8
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5.8
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0.3
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|
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21
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5.6
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0.1
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8.7
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6.8
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5.8
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0.3
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22
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5.6
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0.0
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8.1
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5.5
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5.8
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0.2
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23
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8.1
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5.0
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5.8
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0.1
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24
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8.1
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2.1
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5.8
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0.1
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25
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7.8
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1.0
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26
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7.8
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1.0
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Trophic &
Chemistry
Data
Trophic and Chemistry Summary
Values
See below for table legend
|
Avg Color
|
Avg Alk
|
Avg Cond
|
Avg pH
|
Avg TP EC
|
Avg TP SG
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Avg TP BG
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Avg TP PG
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SDT Min
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SDT Avg
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SDT Max
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Chl Min
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Chl Avg
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Chl Max
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11
|
12
|
61
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7.1
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5.1
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15
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4.6
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6.7
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9.9
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3.2
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4
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4.7
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Plot Legend: Solid color
bars = parameter ranges for most Maine lakes; horizontal thick black
line: mean value for all Maine Lakes; Striped pattern = expected range
for
Coastal
Deep Lakes; white diamonds: mean values for Mousam
Lake.
Trophic and Water Chemistry
Data
Table Legend:
Color: Color (SPU), Alk: Alkalinity
(mg/l CaCO3), SpCon: Specific Conductivity
(\(\mu\)S/cm), pH: pH
(standard units)
TP = Total Phosphorus (\(\mu\)g/L) – EC: Epilimnion
Core, SG: Surface Grab, BG: Bottom
Grab, PG: Profile Grab
SDT = Secchi Disk Transparency (m) –
Min: minimum value, Avg: average
value, Max: maximum value, n: number
of months with Secchi readings per year, b: number of
times Secchi disk was observed touching the bottom of the lake per
year
Chl = Chlorophyll-a (\(\mu\)g/L) – Min: minimum
value, Avg: average value, Max:
maximum value
|
Year
|
Color
|
Alk
|
Cond
|
pH
|
TP-EC
|
TP-SG
|
TP-BG
|
TP-PG
|
SDT-Min
|
SDT-Avg
|
SDT-Max
|
SDT-n
|
SDT-b
|
Chl-Min
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Chl-Avg
|
Chl-Max
|
|
1976
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|
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5.3
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5.7
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6.1
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5
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0
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1977
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|
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6.2
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7.1
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8.4
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6
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0
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1978
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|
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6.9
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7.7
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8.5
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3
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0
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1979
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|
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6.7
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7.6
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8.1
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4
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0
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1980
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|
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6.4
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7.8
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9.4
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8
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0
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1981
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|
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6.4
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7.4
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8.8
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9
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0
|
|
|
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|
1992
|
|
14
|
50
|
7.2
|
7.2
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15
|
|
4.6
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5.0
|
5.3
|
3
|
0
|
3.2
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4
|
4.7
|
|
2006
|
|
|
|
|
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5.0
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6.1
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6.8
|
6
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0
|
|
|
|
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2007
|
|
|
|
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5.2
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6.4
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7.0
|
5
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0
|
|
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|
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2008
|
|
|
|
|
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5.0
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5.5
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6.4
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3
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0
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|
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|
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2009
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|
|
|
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|
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5.9
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6.2
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6.8
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4
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0
|
|
|
|
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2010
|
|
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|
|
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6.7
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6.8
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7.1
|
4
|
0
|
|
|
|
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2011
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|
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6.0
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6.6
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7.2
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4
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0
|
|
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2012
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|
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5.7
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6.1
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6.6
|
3
|
0
|
|
|
|
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2013
|
|
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6.5
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6.8
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7.0
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2
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0
|
|
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2014
|
|
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7.1
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7.1
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7.1
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2
|
0
|
|
|
|
|
2015
|
11
|
10
|
72
|
7.1
|
3.0
|
|
|
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6.8
|
8.7
|
9.9
|
3
|
0
|
|
|
|
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2016
|
|
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7.8
|
7.8
|
7.8
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2
|
0
|
|
|
|
|
2017
|
|
|
|
|
|
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6.4
|
6.6
|
6.9
|
2
|
0
|
|
|
|
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2018
|
|
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6.1
|
6.6
|
7.0
|
2
|
0
|
|
|
|
|
2021
|
|
|
|
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6.1
|
6.1
|
6.1
|
1
|
0
|
|
|
|
|
2022
|
|
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|
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|
|
|
|
5.0
|
6.4
|
7.2
|
12
|
0
|
|
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|
Water
Quality
Trends
Water Quality Trends
Long-term Secchi Disk Transparency (SDT), total phosphorus (TP), and
Chlorophyll-a data are used to determine if the trophic state of a lake
may be changing. Long-term trends may be calculated if there are at
least 10 years of data collected within the last 30 years (1993-2022).
If there are at least eight years of data within the most recent 10
years, a recent trend test may be calculated as well. The results of
trend tests are presented here if there have been enough data
collected from Mousam Lake for any of these three parameters.
The Maine Department of Environmental Protection uses Mann-Kendall Tau
(τ) trend tests on these data to test for significantly changing
conditions. The tau value is a measure of trend direction and magnitude.
Positive tau values indicate positive (upward) trends, negative tau
values indicate negative (downward) trends. Values further from zero
(closer to -1 or 1) indicate a stronger trend. Tau values less than -0.5
or more than 0.5 here suggest the trophic state of a lake may be
changing. Trends with p-values less than 0.05 indicate statistically
significant trends.
Click
here
to learn more about how the Maine Department of Environmental
Protection uses trend test results to evaluate lakes as part of the
Maine water quality standard review process.
Fish
List
Maine IF&W Fish Survey
Data
Fish data courtesy of the Maine
Department of Inland Fisheries & Wildlife.
Fish species observed from Mousam Lake:
|
All fish images from Maine Department of Inland Fisheries & Wildlife
unless noted below
|
|
Banded Killifish:
|
iNaturalist
|
