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r . . . Table 1.--St. Vrain Unit eo;:) gaging station records '-~:~ :~.j (,,0 c~ 0-'" " Drainage Average ;J!i ;:,~ w- Gaging ,stations Location Years of record area annual flo a........' ~. 1/4 Sec. T. R. (sq. mi.) (ac.-ft.) ~ p " St. Vrain Creek: F" '1904-06, 1927-196~ at mouth near Plattevi11e NW 3 3N 671' 976.0 i40,500 at Lyons NW 20 3N 70W 1887-91, 1~5-1965 212.0 94,840 near Longmont SW 7 2N 68w 1965 370.0 72,520 North St. Vrain Creek: at Longmont Dam near Lyons 16 3N 71W 1925-53 106.0 64,870 near Allens Park SW 14 3N 73W 1926-30 32.6 44,960 South St. Vrain Creek near Ward SW 36 2N 73W 1925-27, 28-31, 54-1965 14.4 21,070 .... Middle St. Vrain Creek: .... near Raymond SW 13 2N 73W 1956-58 16,8 30,400 near Al1ens Park NW 3 2N 72W 1926-30 28.0 31,800 Boulder Creek: at mouth near Longmont SW 16 2N 68w 1927-49, 1951-55 439.0 40,470 near Boulder 35 IN 71W 1889-1909 129.0 61,(60 near Orode11 SW 34 IN 71W 1906-14, 1916-1965~/ 102.0 Middle Boulder Creek at Nederland SE 13 lS 73W 1907-1965 36.2 39,170 South Boulder Creek: near Rollinsvil1e SE 36 lS 73W 1911-18, 1945-49 ~ 42.7 53,79~ near Eldorado Springs SE 26 lS 7lW 1895-99, 1908-09, 1911-196 b 109.0 55,53 d North Boulder Creek: at Silver Lake NW 28 IN 73W 1913-32 8.7 19,820 near Nederland SW 6 lS 72W 1930-31 30.4 17,500 ~ Lefthand Creek: '" NE 23 2N 71W 1949-53, 1955-57 49.0 29,470 0 near Boulder 'I-' SE 10 2N 69W 1927-42, 1953-55 72.0 ' 9,340 0 at Longmont ~ Fourmile Creek atOrodel1 SE 27 IN 71W 1947-53 24.1 4,740 Coal Creek near Plainview NE 13 2S 71W 1959-1965 15.1 2,820 ~. Water year average for the years of record shown ::J Some months without re)).ord each year '21 There are some short stretches of early record available Y Adjusted for storage in addition to these years.