Clarity_Measurements_Serpent_2023.xlsx

	A	B	C	D	E	F	G	H	I	J	K	L	M
1	Clarity Depth Measurements 2023
2	Lac Serpent, Quebec
3	Association Lac Serpent, Marco van der Kooij
4	Notes and observations
5	1. Clarity measurements performed at 4 locations in middle of lake
6	2. Measurements performed in medium/small boat (16 feet), eyes 2 foot above water, during calm, sunny conditions between 11.00 and 14.00
7	3. At indicated depth the clarity marker is visible
8	5. Typically (year to year) we see average measurements as follows:
9		a. Approx. 4 m depth during spring and after rain (high water)
10		b. Approx. 6 m depth during late summer/fall/low water
11	6. For 2023 (see below) we obtained an average clarity depth at (station 1, 2, 3) during calm (wind=1), sunny, late summer/fall conditions without algae/debris: 5.52 m
12	7. At For 2023 at station 4 we obtained an average clarity depth during calm (wind=1), sunny, late summer/fall conditions: 4.8 m (lower transparency due to inflow 2 nearby creeks)
13	8. Results for 2023 are similar to measurements in previous years in similar conditions
14
15	Location		Station Nr.	Seq. Nr		Depth (m)	Sun(1-3), 1=clear	Wind (1-3), 1=calm	Recent rain (1=yes)	Other
16	North end (head of snake)		4	1	01/09/23	4,7	1	1
17				2	01/09/23	4,4	1	1
18					average	4,55
19				3	24/09/23	5,4	2	1
20				4	24/09/23	5,7	2	1
21					average	5,55
22				5	02/10/23	4,5	1	1
23					average	4,5
24				6	04/10/23	5,6	1	1
25					average	5,6
26	Past neck		3	1	01/09/23	5,4	1	1
27				2	01/09/23	5,1	1	1			Average station 1, 2, 3 (but during calm wind (1) and no clouds (1) and no algae/debris only)	5,516666667
28					average	5,25					Average station 4 (typically lower transparency due to inflow from 2 creeks) but during calm wind (1) only)		4,8
29				3	24/09/23	5	2	1
30				4	24/09/23	5	2	1
31					average	5
32				5	02/10/23	5,6	1	1
33					average	5,6
34				6	04/10/23	5	1	1		algae/debris
35				7	04/10/23	6,1	1	1
36					average	5,55
37	Auberge		2	1	01/09/23	5,2	1	1
38				2	01/09/23	5,1	1	1
39					average	5,15
40				3	24/09/23	4,8	2	1
41				4	24/09/23	4,8	2	1
42					average	4,8
43				5	02/10/23	5,5	1	1
44					average	5,5
45				6	04/10/23	5,5	1	1		algae/debris
46				7	04/10/23	6,2	1	1
47					average	5,85
48	South: 200 m N of Rock		1	1	01/09/23	5,1	1	1
49				2	01/09/23	4,9	1	1
50					average	5
51				3	24/09/23	5,2	2	1
52				4	24/09/23	5,1	2	1
53					average	5,15
54				5	02/10/23		1	1
55					average
56				6	04/10/23	5,5	1	1
57				7	04/10/23	6,5	1	1
58					average	6
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