360
M. Kejna et al.
Fig. 15.10 The runoff regime of the Struga Toru´ nska at Koniczynka in 1994–2017, determined using the criteria proposed by Dynowska [33], Dynowska and Pociask-Karteczka [34]
(Key 1—nival, poorly developed; 2—nival, moderately developed; 3—nival, well-developed;
4—nival-pluvial; 5—pluvio-nival)
system in the representative catchment area. Long-term meteorological droughts
may cause the water flow to stop, as happened in the summer of 2015 (Fig. 15.11).
15.6 The Water Chemistry of the Struga Toru ´
nska
The quality of water in the Struga Toru´ nska is largely affected by agricultural activities. The water flowing into the catchment area has specific chemical properties influenced by Lake Mlewieckie situated 3.5 km upstream of the river gauge at Lipowiec.
The Struga Toru´ nska flows through the lake, and the lake serves as a buffer absorbing
ample quantities of biogenic compounds [37]. Long-term agricultural pressure on
M. Kejna et al.
Fig. 15.10 The runoff regime of the Struga Toru´ nska at Koniczynka in 1994–2017, determined using the criteria proposed by Dynowska [33], Dynowska and Pociask-Karteczka [34]
(Key 1—nival, poorly developed; 2—nival, moderately developed; 3—nival, well-developed;
4—nival-pluvial; 5—pluvio-nival)
system in the representative catchment area. Long-term meteorological droughts
may cause the water flow to stop, as happened in the summer of 2015 (Fig. 15.11).
15.6 The Water Chemistry of the Struga Toru ´
nska
The quality of water in the Struga Toru´ nska is largely affected by agricultural activities. The water flowing into the catchment area has specific chemical properties influenced by Lake Mlewieckie situated 3.5 km upstream of the river gauge at Lipowiec.
The Struga Toru´ nska flows through the lake, and the lake serves as a buffer absorbing
ample quantities of biogenic compounds [37]. Long-term agricultural pressure on