Versions of Massachusetts General Laws ch. 253 sec. 45A - Construction or alteration of dams; permit approval on LawServer 2023 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2022 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2020 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2019 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2017 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2016 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2015 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2014 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval 2013 Massachusetts General Laws ch. 253 sec. 45A – Construction or alteration of dams; permit approval