表６　イトウの川
	A川	B川	C川	D川	E川	F川	G川	H川	I川	J川	K川	N川	L沼	M沼	総計　匹
1994	30	0	0	0	0	1	1	0	0	0	0	0	0	0	32
1995	78	0	0	0	0	0	1	0	0	0	0	0	0	0	79
1996	67	0	0	0	0	0	0	0	0	0	0	0	2	0	69
1997	89	0	0	0	1	0	3	0	0	0	0	0	0	0	93
1998	66	0	1	0	11	5	2	2	5	2	0	0	0	0	94
1999	65	0	0	0	9	2	0	2	8	0	2	0	0	0	88
2000	94	0	0	0	2	1	0	1	5	1	0	0	0	0	104
2001	80	0	0	0	2	0	2	1	0	0	0	0	0	0	85
2002	99	0	1	0	0	0	0	0	0	0	0	0	0	0	100
2003	100	0	4	1	1	0	0	0	2	0	0	0	0	0	108
2004	85	0	5	7	0	0	0	0	2	0	0	0	0	0	99
2005	58	0	4	2	0	0	0	0	0	0	0	0	0	1	65
2006	27	24	6	1	0	0	0	0	0	0	0	0	0	0	58
2007	59	18	4	1	0	0	1	0	0	0	0	0	0	0	83
2008	73	19	1	0	0	0	0	0	0	0	0	0	0	0	93
2009	46	9	4	0	0	0	8	0	0	0	0	2	0	0	69
2010	46	6	0	2	0	0	2	0	0	0	0	12	0	0	68
2011	61	5	0	5	0	0	1	0	0	0	0	22	0	0	94
2012	51	8	0	4	0	0	0	0	0	0	0	57	0	0	120
2013	72	3	0	4	0	0	0	0	0	0	0	38	0	0	117
2014	78	5	0	2	0	0	0	0	0	0	0	26	0	0	111
2015	54	14	0	13	0	0	0	0	0	0	0	20	0	0	101
2016	47	11	0	11	0	0	0	0	0	0	0	16	0	0	85
2017	33	28	12	8	0	0	0	0	0	0	0	14	0	0	95
2018	51	19	5	7	0	0	0	0	0	0	0	20	0	0	102
2019	52	4	15	1	0	0	0	0	0	0	0	13	0	0	85
2020	23	11	4	27	0	0	0	0	0	0	0	10	0	0	75
総計	1684	184	66	96	26	9	21	6	22	3	2	240	2	1	2372