WEBBER POND

Data period: through 2018

Town	County	Delorme Map #	True Basin	Flushing Rate	Elevation
VASSALBORO	KENNEBEC	13	1	1.52 flushes/yr	118 ft

Maximum Depth	Average Depth	Surface Area	Lake Volume	Drainage Area
12 m (41 ft)	5 m (16 ft)	485 ha (1,198 ac)	23,084,128 m3 (18,715 ac-ft)	21 km2 (8.1 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
1975		17	31			16	17		1.40	2.8	4.3	2
1976		17			14				1.80	2.5	3.0	4		4.5	4.5	4.5
1977		18	65			24	34		2.00	3.1	4.7	5		4.5	4.5	4.5
1978		22	85			11			0.80	2.7	4.1	5		8.9	8.9	8.9
1979		15	67						0.80	2.3	4.0	10		1.9	12.5	53.9
1980		18	77						1.00	2.1	3.6	10		4.9	18.4	43.2
1981		14	72						0.40	3.0	4.8	9		4.6	6.2	7.5
1982									1.50	2.6	4.3	5
1983									1.60	3.1	4.9	6		4.9	4.9	4.9
1984		13							1.00	2.1	4.0	6		4.6	19.0	44.4
1985		14						15	3.00	4.0	4.5	3		4.1	15.3	84.7
1986							18	20						2.4	6.9	14.1
1987		19	65					25	1.40	3.0	4.4	7		3.0	11.5	35.9
1988								41	1.50	3.1	4.6	7		2.4	11.0	37.9
1989					24			24	0.70	3.5	4.6	7		3.6	12.5	71.1
1990					35			64	0.40	3.0	5.7	7		0.1	16.1	60.3
1991		21	58	8.9	35			61	0.80	2.3	3.9	6		2.3	21.5	65.7
1992					27		28	52	1.40	3.1	4.4	5		2.9	5.4	10.1
1993					15		22	43	1.10	2.6	4.3	5		3.7	12.3	34.1
1994					21		430	32	2.10	2.9	3.4	4		4.2	8.3	17.1
1995					23		79	70	1.50	2.8	5.3	5
1996					27			94	0.90	2.4	3.9	4		5.3	21.9	67.8
1997					27			123	1.20	2.6	4.1	5		2.7	13.6	39.7
1998		17	61		26		100	17	0.90	2.2	3.7	5		2.2	23.5	63.0
1999					29		77	58	1.35	3.4	4.8	5		7.4	9.2	12.1
2000		19	63		22		51		1.00	2.5	4.2	5		3.8	17.4	41.9
2001		10	61	7.8	23		249	47	1.20	3.1	5.5	7		4.4	17.2	42.0
2002					27			32	0.82	2.5	5.9	6		5.0	24.9	35.0
2003	4.5	16	65		14		68		1.80	1.8	1.8	1		12.0	20.0	28.0
2004					16		14		1.90	2.9	4.3	2		3.8	12.2	20.6
2005	14.0				26		110		1.45	2.5	3.4	3		9.9	9.9	9.9
2006						22			1.41	2.5	3.5	5
2007						19			2.45	3.6	5.4	5
2008					18	16	247		1.50	3.4	5.8	8		5.7	13.9	54.0
2009					33	18	144		2.56	3.8	6.6	6		9.1	9.1	9.1
2010					24	21	198		1.48	2.8	5.7	6		7.5	14.5	23.0
2011					18	18	328		1.26	3.2	4.8	5		7.8	7.8	7.8
2012	9.0	18	68	7.3	20	18	321		1.44	4.0	5.5	5		8.4	8.4	8.4
2013	9.0	19	71	7.3	22	20	322		2.35	3.1	3.7	4		7.6	10.8	14.0
2014	12.0	20	66	8.9	19	15	227		2.82	3.8	5.6	8		7.5	9.9	12.0
2015					18		34		2.04	3.5	5.3	6		6.4	6.4	6.4
2016	7.0	21	77	7.6	27	18	256		1.78	3.6	6.4	6		12.0	12.0	12.0
2017	6.0	20	82	7.5	23	18	178		1.95	3.3	5.6	6		10.0	10.0	10.0
2018	7.0	19	84	7.4	19	19	48		2.02	3.7	4.9	6		8.0	8.0	8.0

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
8.6	18	68	7.6	23	18	144	48	0.4	3	6.6	5.5	0.1	12	85

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L

	2011-08-31		2013-09-10		2014-08-27		2014-09-11		2015-08-10		2016-08-31		2017-08-24		2018-09-11
Depth (m)	TEMP	DO	TEMP	DO	TEMP	DO	TEMP	DO	TEMP	DO	TEMP	DO	TEMP	DO	TEMP	DO
0	23	7.8	21	7.7	25.3	10.1	22	8.5	26	8.3	24	8.4	24	8.7	22	8.1
1	22	7.8	21	7.6	24.9	10.2	22	8.4	25	8.5	24	8.4	24	8.9	22	8.3
2	22	7.6	20	7.6	24.0	10.4	22	8.4	25	8.6	23	8.4	24	9.0	22	8.1
3	22	7.5	20	7.5	23.4	10.3	22	8.4	24	8.4	23	7.8	23	8.8	22	8.1
4	22	7.4	20	7.4	22.9	9.9	22	8.3	24	7.9	23	7.4	23	8.4	22	8.1
5	22	7.4	20	7.6	22.7	9.5	22	8.3	24	7.7	23	7.3	23	8.2	22	8.1
6	22	7.4	20	7.3	22.2	7.5	22	8.2	21	0.3	23	6.0	22	7.7	22	8.1
7	21	7.0	20	7.1	20.5	2.3	20	0.8	19	0.2	22	1.8	19	1.5	21	6.4
8	17	0.3	19	4.1	17.3	0.8	17	0.6	16	0.2	17	0.8	15	0.6	17	1.0
9	14	0.2	15	0.4	13.7	0.6	14	0.6	14	0.2	15	0.6	14	0.4	14	0.7
10	14	0.2	14	0.3	12.8	0.6	13	0.6	13	0.2	14	0.5	13	0.3
11	13	0.2	14	0.3	12.1	0.6	12	0.6	12	0.2	14	0.5	13	0.3
12	13	0.2	14	0.2	11.6	0.6	12	0.6	12	0.2	13	0.4	12	0.3
13					1.3	0.6							12	0.3

Most recent temperature and dissolved oxygen profile plots

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