Table 6. Distribution of HCDN station information by water- resources region. Number of HCDN Stations with Water- Number Number discharge record acceptable for Resources Water of Daily Monthly Entire Part of Region Years Stations Mean Mean Record Record 1 3,317 71 62 9 59 12 2 7,968 167 44 23 128 39 3 8,100 193 173 20 157 36 4 2,780 57 46 11 50 7 5 5,716 108 94 14 98 10 6 2,179 44 37 7 41 3 7 6,656 127 123 4 116 11 8 1,007 23 21 2 21 2 9 1,457 39 38 1 28 11 10 6,010 144 141 3 130 14 11 3,557 87 85 2 73 14 12 3,509 90 90 0 80 10 13 891 22 22 0 22 0 14 1,892 44 44 0 32 12 15 741 17 17 0 17 0 16 1,409 32 32 0 32 0 17 8,291 191 190 1 178 13 18 4,875 115 115 0 105 10 19 890 31 29 2 31 0 20 1,700 42 42 0 40 2 21 286 15 15 0 15 0 Total 73,231 1,659 1,560 99 1,453 206