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Kontrolljahr | Kontrollstation Buisdorf (Sieg) | Sieg ohne Kontrollstation Buisdorf | Rhein | Wupper/Dhünn | Ruhr | Eifelrur | Lippe | Eifelrur, Lippe, Ruhr und Rhein gesamt | NRW gesamt | 1990 | | 1 | | | | | | 0 | 1 | 1991 | | 2 | | | | | | 0 | 2 | 1992 | | 10 | | | | | | 0 | 10 | 1993 | | 16 | 2 | | | | | 2 | 18 | 1994 | | 9 | | | | | | 0 | 9 | 1995 | | 6 | 1 | | | | | 1 | 7 | 1996 | | 15 | 1 | | | | | 1 | 16 | 1997 | | 13 | | | | | | 0 | 13 | 1998 | | 42 | | 7 | | | 1 | 1 | 50 | 1999 | | 53 | | 15 | | | 1 | 1 | 69 | 2000 | 213 | 122 | | 21 | | | 1 | 1 | 357 | 2001 | 66 | 18 | | 12 | | | 0 | 0 | 96 | 2002 | 189 | 24 | | 17 | 3 | | 0 | 3 | 233 | 2003 | 96 | 64 | | 20 | 1 | 3 | 2 | 6 | 186 | 2004 | 80 | 13 | | 37 | | 1 | | 1 | 131 | 2005 | 170 | 25 | | 39 | | 2 | | 2 | 236 | 2006 | 175 | 112 | 1 | 43 | | | | 1 | 331 | 2007 | 410 | 53 | | 69 | | | | 0 | 532 | 2008 | 296 | 43 | 4 | 32 | 1 | 2 | | 7 | 378 | 2009 | 199 | 83 | 1 | 30 | | 5 | | 6 | 318 | 2010 | 284 | 91 | 1 | 12 | | 8 | | 9 | 396 | 2011 | 114 | 82 | 1 | 6 | | 14 | | 15 | 217 | 2012 | 99 | 28 | 2 | 5 | | 18 | | 20 | 152 | 2013 | 100 | 54 | 1 | 14 | | 3 | | 4 | 172 | 2014 | 159 | 49 | 2 | 5 | 1 | 3 | 1 | 7 | 220 | 2015 | 221 | 39 | 3 | 9 | | 8 | 0 | 11 | 280 | 2016 | 112 | 30 | 1 | 9 | | 9 | 10 | 161 | 161 | Summen | 2.983 | 1097 | 21 | 402 | 5 | 76 | 5 | 81 | 4.591 |

Lachsnachweise Kontrollstation für Wanderfische am Siegwehr Buisdorf, Quelle: LANUV
| | Saison | Mrz | Apr | Mai | Jun | Jul | Aug | Sep | Okt | Nov | Dez | Jan | Feb | Gesamt | 2000/2001 | 0 | 0 | 0 | 0 | 8 | 19 | 29 | 95 | 48 | 14 | 2 | 0 | 215 | 2001/2002 | 0 | 0 | 0 | 0 | 0 | 1 | 13 | 26 | 23 | 1 | 0 | 0 | 64 | 2002/2003 | 0 | 0 | 0 | 0 | 3 | 2 | 4 | 85 | 80 | 15 | 0 | / | 189 | 2003/2004 | / | / | / | / | / | / | / | 17 | 61 | 18 | 2 | 2 | 100 | 2004/2005 | / | 0 | 0 | / | / | 3 | 14 | 35 | 21 | 3 | 0 | / | 76 | 2005/2006 | / | 0 | 0 | / | / | 1 | 7 | 111 | 33 | 18 | 2 | / | 172 | 2006/2007 | / | 0 | 0 | / | / | 2 | 32 | 52 | 75 | 12 | 3 | / | 176 | 2007/2008 | / | 0 | 0 | 10 | 25 | 15 | 111 | 166 | 75 | 5 | 2 | | 409 | 2008/2009 | 0 | 0 | 0 | 11 | 4 | 9 | 12 | 232 | 26 | 0 | / | / | 294 | 2009/2010 | 0 | 0 | 0 | 3 | 4 | 0 | 0 | 44 | 145 | 3 | / | / | 199 | 2010/2011 | 0 | 1 | 0 | 0 | 0 | 2 | 130 | 80 | 71 | 0 | 0 | 0 | 284 | Gesamtfang 2000-2010 | 0 | 1 | 0 | 24 | 44 | 54 | 352 | 943 | 658 | 89 | 11 | 2 | 2178 | % | 0.0 | 0.0 | 0.0 | 1.1 | 2.0 | 2.5 | 16.2 | 43.3 | 30.2 | 4.1 | 0.5 | 0.1 | 100 | | | | | | | | | | | | | | | 2011/2012 | 0 | 0 | 0 | 0 | / | 13 | 8 | 68 | 10 | 15 | | | 114 | % am Saisonanfang | 0.0 | 0.0 | 0.0 | 0.0 | / | 11.4 | 7.0 | 59.6 | 8.8 | 13.2 | 0.0 | 0.0 | 100 | 0=kein Nachweis, /=keine Kontrolle, Daten bis 10.01.11 | | | | | | |
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