Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
NEWPORT PENOBSCOT 22 1 0.87 flushes/yr 314 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
7 m
(24 ft) 		3 m
(9 ft) 		80 ha
(198 ac) 		2,162,368 m3
(1,753 ac-ft) 		3 km2
(1.2 mi2)

Secchi Disk Transparency Graphs

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

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
1974 3.7 4.2 4.6 2
1978 18 50 4.6 5.5 6.4 6
1980 22 2.8 3.8 4.6 6
1981 18 45 15 4.0 4.7 5.6 6 1.4 2.9 4.5
1983 16 60 5.0 5.0 5.0 1
1988 15
2018 15 20 72 7.4 12 11 5.3 5.3 5.3 1 4.0 4.0 4.0

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
15 18 57 7.4 16 11 15 2.8 4.7 6.4 3.7 1.4 3.5 4.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-08-14
1981-09-03
2018-08-22
Depth (m) TEMP DO TEMP DO TEMP DO
0 25 8.2 21 8.4 24 8.3
1 25 8.1 21 8.3 24 8.3
2 25 8.1 21 8.1 24 8.3
3 25 8.1 20 8.1 24 8.3
4 23 8.0 20 8.2 24 8.0
5 23 7.9 20 8.2 24 6.5
6 21 6.2 20 7.8 18 1.0
7 19 2.6 19 3.1

Most recent temperature and dissolved oxygen profile plots

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