kowalewski.htm

An increase of water retention in the programmes of small retention in the country to the
year 2015 is estimated at 1141 million m3. It means annual mean increase of retention capacity by
c. 60 million m3. Accomplishment of relevant actions in the years 1997†“2007 allowed collecting
57 million m3 in lakes, c. 56 million m3 in artificial reservoirs, 18.5 million m3 in fishponds, c. 10.5
million m3 with the channel retention and over 2 million m3 in other investments. It makes total increase
of water retention by 142 million m3 which is 12.4% of target retention and the mean annual
increment of c. 13 million m3.
The paper presents volumes of retained water, sources and structure of financing, mean unit costs
of retention increments and the increase of retention capacity in particular voivodships (acc. to new
administration division) in the years 1998†“2007.