Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
NEWPORT PENOBSCOT 22 1 1.46 flushes/yr 200 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
18 m
(60 ft) 		6 m
(21 ft) 		1,734 ha
(4,285 ac) 		110,600,000 m3
(89,665 ac-ft) 		116 km2
(45 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

## [1] "No 2018 Secchi Disk Transparency Data"

Water Chemistry and Trophic State Parameters

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 SpCon pH TP-EC TP-SG TP-BG TP-PG SDT-Min SDT-Avg SDT-Max SDT-n SDT-b Chl-Min Chl-Avg Chl-Max
1972 33 143 64
1978 80 61 0.9 1.1 1.5 4 28.1 28 28
1979 55 1.1 1.8 2.8 8
1980 67 1.0 1.8 3.4 9 28.2 28 28
1981 4 123 54 1.2 2.5 4.8 9
1982 71 0.8 1.3 2.5 6
1983 73 0.7 1.6 3.5 7
1984 63 0.5 1.7 3.6 6
1985 38 0.7 1.8 3.8 6 54.6 55 55
1986 38 0.9 1.6 2.9 5
1987 42 1.0 1.7 2.6 5
1988 31 2.8 3.0 3.1 2 16.5 16 16
1989 39 0.8 2.2 3.6 2
1990 29 1.3 1.9 3.0 3
1991 23 39 0.8 1.5 2.7 4
1992 38 0.6 0.9 1.5 3
1993 30 1.2 1.7 2.0 3
1994 36 1.0 2.6 4.4 4
1995 29 1.8 2.6 3.7 4
1996 33 1.2 2.4 3.7 4
1997 23 2.0 2.8 3.4 3
1998 33 1.6 2.0 2.2 3
2000 39 119 26 30 33 0.9 1.8 3.4 4 7.4 15 24
2001 21 22 1.8 2.3 2.8 3 14.0 14 14
2003 3.5 3.5 3.5 1
2008 18 25 1.9 2.2 2.5 2

Lake Chemistry and Trophic Summary Data - Overall Summary Values:

Avg Color Avg Alk Avg SpCon pH Avg TP-EC Avg TP-SG Avg TP-BG Avg TP-PG SDT-Min SDT-Avg SDT-Max SDT-n Chl-Min Chl-Avg Chl-Max
25 128 36 23 25 44 0.5 2 4.8 4.4 7.4 26 55

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1995-08-23
1996-08-28
1997-08-25
1998-08-25
2000-08-15
2000-09-14
2001-08-29
2008-09-12
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23 7.9 22 7.8 22 9.7 23 9.1 22 8.2 20 10.3 22 7.7 20 8.4
1 23 7.9 22 7.8 22 10.2 23 8.7 22 8.3 20 10.3 22 7.6 20 8.5
2 23 7.8 22 7.8 21 10.0 22 7.9 22 7.5 20 10.3 22 7.6 20 8.3
3 22 6.8 22 7.2 21 9.1 22 7.7 22 7.3 20 10.2 22 7.5 20 8.2
4 22 7.1 22 7.4 21 7.9 22 7.6 22 7.3 20 10.1 22 7.5 20 8.1
5 22 7.1 22 7.2 21 7.2 22 7.5 22 7.2 20 10.1 22 7.3 19 8.0
6 22 5.0 22 7.1 21 6.9 22 6.8 22 7.1 20 9.5 22 7.3 19 7.8
7 21 1.4 22 7.0 21 6.7 22 5.6 22 5.4 20 9.2 22 7.1 19 7.7
8 20 1.0 20 0.2 20 6.5 22 4.7 20 0.2 20 9.1 20 0.6 19 7.5
9 20 0.4 20 0.2 20 1.4 21 3.1 20 0.1 20 8.9 19 0.6
10 18 0.3 20 0.2 20 0.1 20 8.8 19 0.6
11 20 0.2 19 0.4

Most recent temperature and dissolved oxygen profile plots

Temperature (°C), Dissolved Oxygen (mg/L)