15 Monitoring of Small Catchments in …
357
evapotranspiration. The hydrological characteristics of the Struga Toru´ nska within
the representative catchment area are largely affected by its geological structure and
extensive agricultural activities. The catchment area is mostly drained, which, given
the local hydrogeological conditions, substantially affects the development of the
river’s hydrological regime. The river relatively quickly responds to the springtime
snow melting and any major precipitation.
The flow rate of water in the Struga Toru´ nska demonstrates a considerable
year-on-year variability, which depends on the pattern of meteorological conditions
(Table 15.2, Figs. 15.7 and 15.8).
Table 15.2 Precipitation at Koniczynka and hydrological characteristic of the Struga Toru´ nska
River, 1994–2017
Year
Precipitation
(mm)
Flow
(m 3 s −1 )
Outflow
(mm)
Flow rate
(%)
Specific runoff
(dm 3 s −1 km −2 )
Lipowiec Koniczynka Representative catchment
1994
498.7
0.62
1995
577.8
0.45
1996
405.0
0.66
1997
444.4
0.31
1998
562.8
0.51
1999
579.6
0.84
2000
558.7
0.28
2001
762.0
0.54
2002
593.8
0.73
2003
468.6
0.39
2004
496.1
0.51
0.61
84.9
0.17
2.69
2005
413.0
0.63
0.77
129.3
0.31
4.10
2006
497.8
0.55
0.65
92.2
0.19
2.92
2007
670.7
0.82
1.04
196.4
0.29
6.23
2008
592.6
0.36
0.52
142.2
0.24
4.55
2009
500.2
0.29
0.37
73.7
0.15
2.34
2010
674.9
0.33
0.57
200.1
0.30
6.60
2011
647.2
0.42
1.00
503.5
0.78
15.97
2012
484.2
0.26
0.47
176.2
0.36
16.20
2013
618.6
0.25
0.35
88.8
0.14
2.90
2014
463.9
0.14
0.19
43.5
0.09
1.40
2015
437.3
0.08
0.10
23.7
0.05
0.80
2016
542.3
0.09
0.23
125.4
0.23
4.00
2017
727.2
0.25
0.89
570.4
0.78
18.30
1994–2017 543.1
0.35
0.55
175.0
0.32
5.60
357
evapotranspiration. The hydrological characteristics of the Struga Toru´ nska within
the representative catchment area are largely affected by its geological structure and
extensive agricultural activities. The catchment area is mostly drained, which, given
the local hydrogeological conditions, substantially affects the development of the
river’s hydrological regime. The river relatively quickly responds to the springtime
snow melting and any major precipitation.
The flow rate of water in the Struga Toru´ nska demonstrates a considerable
year-on-year variability, which depends on the pattern of meteorological conditions
(Table 15.2, Figs. 15.7 and 15.8).
Table 15.2 Precipitation at Koniczynka and hydrological characteristic of the Struga Toru´ nska
River, 1994–2017
Year
Precipitation
(mm)
Flow
(m 3 s −1 )
Outflow
(mm)
Flow rate
(%)
Specific runoff
(dm 3 s −1 km −2 )
Lipowiec Koniczynka Representative catchment
1994
498.7
0.62
1995
577.8
0.45
1996
405.0
0.66
1997
444.4
0.31
1998
562.8
0.51
1999
579.6
0.84
2000
558.7
0.28
2001
762.0
0.54
2002
593.8
0.73
2003
468.6
0.39
2004
496.1
0.51
0.61
84.9
0.17
2.69
2005
413.0
0.63
0.77
129.3
0.31
4.10
2006
497.8
0.55
0.65
92.2
0.19
2.92
2007
670.7
0.82
1.04
196.4
0.29
6.23
2008
592.6
0.36
0.52
142.2
0.24
4.55
2009
500.2
0.29
0.37
73.7
0.15
2.34
2010
674.9
0.33
0.57
200.1
0.30
6.60
2011
647.2
0.42
1.00
503.5
0.78
15.97
2012
484.2
0.26
0.47
176.2
0.36
16.20
2013
618.6
0.25
0.35
88.8
0.14
2.90
2014
463.9
0.14
0.19
43.5
0.09
1.40
2015
437.3
0.08
0.10
23.7
0.05
0.80
2016
542.3
0.09
0.23
125.4
0.23
4.00
2017
727.2
0.25
0.89
570.4
0.78
18.30
1994–2017 543.1
0.35
0.55
175.0
0.32
5.60