Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
CRAWFORD WASHINGTON 36 1 1.69 flushes/yr 223 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
11 m
(36 ft) 		4 m
(14 ft) 		103 ha
(254 ac) 		4,450,042 m3
(3,608 ac-ft) 		11 km2
(4.2 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
1984 5.5 5 7 4.3 4.9 5.5 4 3.3 3.3 3.3

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
5.5 5 7 4.3 4.9 5.5 4 3.3 3.3 3.3

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1984-09-07
Depth (m) TEMP DO
0 19 8.6
1 20 8.5
2 20 8.4
3 20 8.4
4 20 8.4
5 20 8.3
6 20 8.3
7 18 3.6
8 16 0.3
9 14 0.2
10 13 0.1

Most recent temperature and dissolved oxygen profile plots

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