Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
SWANVILLE WALDO 22 1 0.3 flushes/yr 202 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
26 m
(87 ft) 		9 m
(30 ft) 		552 ha
(1,363 ac) 		50,839,872 m3
(41,217 ac-ft) 		22 km2
(8.7 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
1994
2015 9.2 9.7 10.1 3
2016 7.5 8.8 9.4 5

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
7.5 9.3 10 4 Inf 1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1994-09-14
Depth (m) TEMP DO
0 17 9.2
1 17 9.4
2 17 9.4
3 17 9.4
4 17 9.4
5 17 9.4
6 17 9.4
7 17 9.4
8 17 9.2
9 17 9.2
10 17 9.2
11 16 8.5
12 15 7.6
13 13 5.0
14 10 3.0
15 10 2.7
16 9 2.4
17 9 2.0
18 9 1.8
19 9 1.6
20 9 1.4
21 9 1.0

Most recent temperature and dissolved oxygen profile plots

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