|
<br /> MONTHLY STREAMFLOW IN ACRE-FEET14
<br /> (INFLOW) NIOBRARA RIVER AT WYO. - NEBR. STATE LINE (1955-80)
<br /> Jan. Feb. Mar. April May June July Aug. Sept. Oct. Nov. Dec.
<br />High 774 1,004 1.188 972 486 748 1,367 960 218 252 294 286
<br />Low 123 127 185 192 179 93 87 63 60 109 129 125
<br />Mean 220 294 379 371 302 250 236 175 143 175 190 200
<br /> (MOUTH) NIOBRARA RIVER NEAR VERDEL (1938-1980)
<br /> Jan. Feb. Mar. April May June
<br />High 100,688 , 23,980 272,145 190,186 201,356 264,408
<br />Low 43,41 6 52,259 93,450 76,322 75,533 62,157
<br />Mean 77,660 94,210 159,022 125,468 115,441 100,289
<br /> July Aug. Sept. Oct. Nov. Dec.
<br />Hi9h 330,257 126,044 94,855 117,651 127,512 101,851
<br />Low 33.914 40,172 41,882 62,060 56,108 48,390
<br />Mean 80,090 62,496 68,047 81,310 83,598 76,459
<br /> (INFLOW) PONCA CREEK AT ANOKA (1949-1980)
<br /> Jan. Feb. Mar. April May June
<br />High 2,313 2,430 46,850 44,840 32,623 57,048
<br />Low 0 0 173 256 266 42
<br />Mean 252 1,175 9,573 6,797 4,710 4,801
<br /> July Aug. Sept. Oct. Nov. Dec.
<br />High 40,198 11,172 4,781 2,436 2,323 1,972
<br />Low 0 0 0 0 0 0
<br />Mean 2,337 1,327 532 381 373 272
<br />
<br />(OUTFLOW) PONCA CREEK AT VERDEL (1957-1980)
<br />
<br /> Jan. Feb. Mar. April May June
<br />High 3,561 5,726 82,007 39,424 34,569 73,632
<br />Low 0 0 401 1,345 530 335
<br />Mean 516 1,853 15,078 9.109 7,013 8,355
<br /> July Aug. Sept. Oct. Nov. Dec.
<br />High 44,836 20,086 6,803 5,127 4,051 2.736
<br />Low 0 0 0 0 0 0
<br />Mean 4,327 2,061 780 756 839 464
<br />
<br />Figures rounded to nearest whote number
<br />
<br />reservoirs with a priority before August 1,
<br />1957.15 Direct flow rights on the Niobrara River
<br />and Van Tassel Creek in Wyoming having a
<br />priority date after August 1, 1957, are to be
<br />regulated on a priority basis with Nebraska
<br />rights.
<br />This compact was also somewhat unique in
<br />
<br />recognizing that the future use of groundwater
<br />for irrigation might be a factor in the depletion of
<br />surface flows in the basin. The compact delayed
<br />any apportionment of groundwater until ade-
<br />quate data became available and provided that
<br />investigation be carried out to obtain the neces-
<br />sary data on groundwater. To date, no investiga-
<br />tions have taken place.
<br />
<br />1-6
<br />
|