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解放后,吉林省建成大型水库有10座,中型水库80多座,小型水库和塘坝千余座。除大型水库外,中小型水库修建时均缺乏水文资料,当时在设计年径流时,一般采用等值线图、径流系数或经验公式,设计洪水一般由暴雨途径或等值线图进行计算。目前中小型水库已有一批观测精度较高,系列较长的水库观测资料,其中正式整编刊印的中小型水库就有53个,观测年限15年以上的超过30个,通过这些
After liberation, Jilin built 10 large reservoirs, more than 80 medium-sized reservoirs, and more than 1,000 small reservoirs and ponds. In addition to large reservoirs, hydrological data are lacking in the construction of small and medium-sized reservoirs. At the time of designing annual runoff, contour maps, runoff coefficients or empirical formulas were generally used. Floods were generally calculated by means of heavy rainfall or contour maps. At present, a number of reservoirs with high observation accuracy and long series have been found in small and medium-sized reservoirs. Among them, there are 53 small and medium-sized reservoirs that have been officially compiled and edited, and over 30 of them have been observing over 15 years.