及その他必要な措置を講ずるよう努めるものとする。 Article 16 In view of the fact that rich water volume in inland waters  contributes to conserving inland waters resources and, through the smooth  inflow of nutrient salts into the sea, conserving aquatic resources, in order to  secure water volume in inland waters, the national and local governments are  to endeavor to spread facilities having the function of infiltrating rainwater  into the underground and to take other necessary measures.  第十七条 国及び地方公共団体は、森林の有する水源の涵養の機能の発揮により良質な 水の安定供給を確保する観点から、内水面水産資源の生育環境の保全及び改善に資す るよう、森林の整備及び保全に努めるものとする。 Article 17 From the viewpoint of securing a stable supply of quality water by  bringing out the function of cultivating water sources owned by forests, in  order to contribute to conserving and improving the growth environment of  inland waters resources, the national and local governments are to endeavor to  develop and conserve forests.  第十八条 国及び地方公共団体は、内水面水産資源の生育に資するため、魚道の整備及 びその適切な維持管理、産卵場の造成その他必要な措置を講ずるよう努めるものとす る。 Article 18 In order to contribute to the growth of inland waters resources, the  national and local governments are to endeavor to develop fishways, properly  maintain and manage them, create spawning grounds, and take other  necessary measures.  第十九条 国及び地方公共団体は、内水面水産資源の生育環境の改善その他内水面に係 る生態系の保全に資するよう、自然との共生及び環境との調和に配慮した河川の整備 を推進するよう努めるものとする。 Article 19 In order to contribute to improving the growth environment of inland  waters resources and otherwise conserving the ecosystem pertaining to inland  waters, the national and local governments are to endeavor to promote river  development that considers coexistence with nature and harmony with the  environment.  9  （自然との共生及び環境との調和に配慮した河川整備の推進） (Promotion of River Development That Considers Coexistence with Nature and  Harmony with Environment)  （内水面水産資源の生育に資する施設の整備） (Development of Facilities That Contribute to Growth of Inland Waters  Resources)  （森林の整備及び保全） (Development and Conservation of Forests) 