'Conservancy' definitions:

Definition of 'conservancy'

(from WordNet)
noun
A commission with jurisdiction over fisheries and navigation in a port or river
noun
The official conservation of trees and soil and rivers etc.

Definition of 'Conservancy'

From: GCIDE
  • Conservancy \Con*serv"an*cy\, n. Conservation, as from injury, defilement, or irregular use. [1913 Webster]
  • [An act was] passed in 1866, for vesting in the Conservators of the River Thames the conservancy of the Thames and Isis. --Mozley & W. [1913 Webster]