Table 3 Corresponding water levels and water temperatures on the month of electrofishing
Date of fishing | Water gauge [m] Mannheim | Water temperature [°C] Ludwigshafen |
|---|---|---|
Dec 1976 | n. d. | 5.5 |
Jun 1977 | 3.82 | 17.1 |
Oct 1977 | 2.17 | 14.1 |
Jun 1978 | 4.35 | 16.8 |
Sep 1978 | 2.91 | 17.5 |
Apr 1979 | 3.50 | 9.7 |
Sep 1979 | n. d. | 18.5 |
Mar 1980 | n. d. | 7.9 |
Sep 1980 | n. d. | 17.8 |
May 1981 | n. d. | 13.9 |
Sep 1981 | n. d. | 18.2 |
May 1982 | 3.98 | 14.0 |
Sep 1983 | 2.92 | 18.5 |
May 1984 | 2.19 | 12.9 |
Sep 1984 | 3.10 | 17.5 |
Jun 1985 | 4.20 | 21.5 |
Jun 1988 | 4.12 | 17.9 |
Jun 1989 | 2.13 | 19.9 |
Sep 1990 | 1.67 | 19.0 |
May 1993 | 2.91 | 17.7 |
Jul 1994 | 2.90 | 23.9 |
Jul 1995 | 3.98 | 22.5 |
Jul 1997 | 2.39 | 19.7 |
Jul 1998 | 2.63 | 21.7 |
Sep 2000 | 2.80 | 19.0 |
Sep 2002 | n. d. | 18.6 |
Oct 2004 | n. d. | 15.8 |
Sep 2006 | n. d. | 20.1 |
Sep 2010 | 3.41 | 18.3 |