1878 A. K. Johnston ii. 26 There is naturally a marked difference in the moisture supply north and south of the Atlas.
1937 S. F. Armstrong (ed. 3) ii. 24 When the moisture supply fails these cells become flaccid.
1990 J. Stewart & H. Tiessen in C. Mungall & D. McLaren (1991) 202 Central Brazil is entirely covered with savannah—the Cerrado, which is semi-arid, but has a relatively even and adequate moisture supply.