1993 Trip

1993 River Trip Collections

In September 1993, 23 aquatic sampling sites were surveyed. These included five sites on the main stem of the Colorado River (including backwater bays); Warm Springs / Lava Well, Pumpkin Springs, and five unnamed backwater marsh areas that drain into the Colorado River; and 16 direct tributary streams of the Colorado River (Nankoweap Creek, Bright Angel Creek, Hermit Creek, Crystal Creek, Shinumu Creek, Royal Arch Creek, 128 Mile Creek, Stone Creek, Tapeats Creek, Deer Creek, Kanab Creek, Matkatamiba Canyon Creek, Havasu Creek, Spring Canyon Creek, Three Springs Canyon Creek and seep, and Diamond Creek. Aquatic oligochaetes were collected from 13 of these 23 sites.

1993 sites in Coconino County

  • Colorado River (COR RM 31.65R), in moist sand just above water line, along north edge of South Canyon Bay, 110 m downstream South Canyon Creek Rapids (280m NE Stanton’s Cave), upstream (around bend from) Vasey’s Paradise. U.T.M. Zone 12: 423250m East, 4039820m North. Elevation: 2,870ft. North Canyon Point, ARIZ. (1985 prov. ed.) USGS tqm.  01 September 1993. Collectors: M.J. Wetzel (#1993-41) (INHS); L.E. Stevens, J. Stanford, J. Pflueger.
  • Colorado River (COR RM 31.65R), along north edge of river, in South Canyon Bay, 110 m downstream South Canyon Creek Rapids (280m NE Stanton’s Cave), upstream (around bend from) Vasey’s Paradise. U.T.M. Zone 12: 423255 m East, 4039815m North. Elevation: 2,870 ft. North Canyon Point, ARIZ. (1985 prov. ed.) USGS tqm.  01 September 1993. Collectors: M.J. Wetzel (#1993-42 a,b) (INHS), with L.E. Stevens, J. Pflueger.
  • Backwater marsh #1, in drainage ‘channel’ just ‘upstream’ (SSE) of inlet / bay created by sand spit along east side Colorado River (COR RM 43.5L), 150m upstream of President Harding Rapids, just ENE Point Hansbrough, in Marble Canyon, Grand Canyon National Park. U.T.M. Zone 12: 423970m East, 4027900m North. Elevation: 2,835ft. Tatahatso Point, Arizona (1988 prov. ed.) USGS tqm.  02 September 1993. Collectors: M.J. Wetzel (#1993-43), M.L. Biyal (INHS).
  • Backwater marsh #2-up, at upstream end of drainage into bay created by sand spit, 50-70m ESE bay outlet to Colorado River (COR RM 50.0L), in Marble Canyon, Grand Canyon National Park. U.T.M. Zone 12: 422970m East, 4021400m North. Elevation: 2,840ft. Nankoweap Mesa, Arizona (1988 prov. ed.) USGS tqm.  02 September 1993. Collectors: M.J. Wetzel (#1993-44), M.L. Biyal (INHS).
  • Backwater marsh #2-dn, downstream site, near mouth of bay created by sand spit, 5-15m ESE bay outlet to Coloradao River (COR RM 50.0L), in Marble Canyon, Grand Canyon National Park. U.T.M. Zone 12: 422920m East, 4021430m North. Elevation: 2,840ft. Nankoweap Mesa, Arizona (1988 prov. ed.) USGS tqm.  02 September 1993. Collectors: M.J. Wetzel (#1993-45), M.L. Biyal (INHS).
  • Nankoweap Creek, 200m upstream (SW) confluence with Colorado River (COR RM 52.2L) at Nankoweap Rapids, Grand Canyon National Park. U.T.M. Zone 12: 422900m East, 4018620m North. Elevation: 2,830ft. Nankoweap Mesa, Arizona (1988 prov. ed.) USGS tqm.  02 September 1993. Collectors: M.J. Wetzel (#1993-46), M.L. Biyal (INHS); C.L. Graham (NAU volunteer).
  • Nankoweap Bay marsh, on north side of Nankoweap Bay, just west of the lower set of Nankoweap Rapids; marsh drains into north side of this bay of Colorado River (COR RM 52.7L), Grand Canyon National Park. U.T.M. Zone 12: 423080m East, 4017430m North. Elevation: 2,787ft. Nankoweap Mesa, Arizona (1988 prov. ed.) USGS tqm.  02 September 1993. Collector: M.J. Wetzel (#1993-47) (INHS).
  • Backwater slough / marsh, Colorado River (COR RM 55.5R), 0.5 mi (0.8 km) upstream (NW) Kwagunt Creek / rapids, Colorado River (COR RM 55.5R); Grand Canyon National Park. U.T.M. Zone 12: 425150m East, 4013930m North. Elevation: 2,795ft. Nankoweap Mesa, Arizona (1988 prov. ed.) USGS tqm.  03 September 1993. Collectors: M.J. Wetzel (#1993-48), M.L. Biyal (INHS).
  • Bright Angel Creek, 550m upstream confluence with Colorado River (COR RM 87.8R), adjacent to North Kaibab Trail and Phantom Ranch campground, 80m downstream footbridge across creek; Grand Canyon National Park. U.T.M. Zone 12: 401420m East, 3995590m North. Elevation: 2,485ft. Desert View, ARIZ. (1988 prov. ed.) USGS tqm.  05 September 1993. Collectors: M.J. Wetzel (#1993-49), M.L. Biyal (INHS).
  • Hermit Creek, 90m upstream confluence with Colorado River (COR RM 95.0L); Grand Canyon National Park. U.T.M. Zone 12: 391180m East, 3995400m North. Elevation: 2,360ft. Grand Canyon, ARIZ. (1988 prov. ed.) USGS tqm.  06 September 1993. Collectors: M.J. Wetzel (#1993-50), M.L. Biyal (INHS).
  • Crystal Creek, 30-50m upstream confluence with Colorado River (COR RM 98.15R); in Granite Gorge, Grand Canyon National Park. U.T.M. Zone 12: 388140m East, 3999470m North. Elevation: 2,350ft. Shiva Temple ARIZ. (1988 prov. ed.) USGS tqm.  06 September 1993. Collectors: M.J. Wetzel (#1993-51), M.L. Biyal (INHS).
  • Shinumo Creek, 70-120m upstream (N) of confluence with Colorado River (COR RM 108.6R); downstream of waterfall/pool; in Granite Gorge, Grand Canyon National Park. U.T.M. Zone 12: 378820m East, 4011000m North. Elevation: 2,202ft. Havasu Point, Arizona (1988 prov. ed.) USGS tqm.  06 September 1993. Collectors: M.J. Wetzel (#1993-52), M.L. Biyal (INHS).
  • Royal Arch Creek and pools, 120m upstream (S) confluence with Colorado River (COR RM 116.6L); in Granite Gorge, Grand Canyon National Park. U.T.M. Zone 12: 369640m East, 4006515m North. Elevation: 2,200ft. Explorers Monument, Arizona (1988 prov. ed.) USGS tqm.  06 September 1993. Collectors: M.J. Wetzel (#1993-53), M.L. Biyal (INHS).
  • 128 Mile Creek, 100m upstream (SE) confluence with Colorado River (COR RM 128.5R); in Middle Granite Gorge, Grand Canyon National Park. U.T.M. Zone 12: 366710m East, 4019030m North. Elevation: 2,075ft. Powell Plateau, Arizona (1988 prov. ed.) USGS tqm.  07 September 1993. Collector: M.J. Wetzel (#1993-54) (INHS).
  • Stone Creek, from 150 to 250m upstream confluence with Colorado River (COR RM 131.9R); Grand Canyon National Park. U.T.M. Zone 12: 369750m East, 4023260m North. Elevation: 2,070ft. Powell Plateau, Arizona (1988 prov. ed.) USGS tqm.  07 September 1993. Collectors: M.J. Wetzel (#1993-55), M.L. Biyal (INHS).
  • Tapeats Creek, from 75-15-m upstream confluence with Colorado River (COR RM 133.7R); Grand Canyon National Park. U.T.M. Zone 12: 368330m East, 4025970m North. Elevation: 2,000ft. Powell Plateau, Arizona (1988 prov. ed.) USGS tqm.  07 September 1993. Collectors: M.J. Wetzel (#1993-56), M.L. Biyal (INHS).
  • Deer Creek, 20-40m upstream (NNW) confluence with Colorado River (COR RM 136.2R); in Granite Narrows, Grand Canyon National Park. U.T.M. Zone 12: 364770m East, 4027950m North. Elevation: 1,940ft. Fishtail Mesa, Arizona (1988 prov. ed.) USGS tqm.  07 September 1993. Collectors: M.J. Wetzel (#1993-57), M.L. Biyal (INHS).
  • Matkatamiba Canyon Creek, in Matkatamiba Canyon, from 100-750m upstream (S, SE) confluence of creek with Colorado River (COR RM 147.9L), just upstream Matkatamiba Rapids; Grand Canyon National Park. U.T.M. Zone 12: 350080m East, 4022960m North. Elevation: 1,930ft. Havasu Falls, Arizona (1988 prov. ed.) USGS tqm.  08 September 1993. Collectors: M.J. Wetzel (#1993-59), M.L. Biyal (INHS).
  • Havasu Creek, 140m upstream confluence with Colorado River (COR RM 156.8L), where foot trail first crosses creek (from SW to NE side of creek); Grand Canyon National Park. U.T.M. Zone 12: 341880m East, 4019240m North. Elevation: 1,810ft. SB Point, Arizona (1988 prov. ed.) USGS tqm.  08 September 1993. Collectors: M.J. Wetzel (#1993-60), M.L. Biyal (INHS).
  • Lava Well / Warm Springs, in pool along bluff, 60m SE Lava Falls rapid (Colorado River (COR RM 179.4L); on Hualapai Indian Reservation adjacent to Grand Canyon National Park. U.T.M. Zone 12: 312880m East, 4007520m North. Elevation: 1,665ft. Vulcan’s Throne, ARIZ. (1967 ed.) USGS tqm.  09 September 1993. Collectors: M.J. Wetzel (#1993-61) (INHS), M. Shaver (NAU).
  • Pumpkin Springs, from several sites around perimeter of pool at top of “pumpkin”, Colorado River (COR RM 212.8L), at northern edge of bay / campsite; Grand Canyon National Park. U.T.M. Zone 12: 289445m East, 3976960m North. Elevation: 1,440ft. Granite Park, ARIZ. (1967 ed.) USGS tqm. 11 September 1993. Collectors: M.J. Wetzel (#1993-64), M.L. Biyal (INHS).
  • Seep, north side Three Springs Canyon Creek, along trail east into canyon, 220m E of confluence of creek with Colorado River (COR RM 215.6L); in Lake Mead National Recreation Area. U.T.M. Zone 12: 291880m East, 3973510m North. Elevation: 1,460ft. Granite Park, ARIZ. (1967 ed.) USGS tqm.  11 September 1993. Collectors: M.J. Wetzel (#1993-65), M.L. Biyal (INHS).
  • Three Springs Canyon Creek, 330m upstream (E) of confluence of creek with Colorado River (COR RM 215.6L), where trail drops down (SE) to and crosses creek, in heavy vegetation and pool below creek/boulder slides; in Lake Mead National Recreation Area. U.T.M. Zone 12: 291880m East, 3973500m North. Elevation: 1,440ft. Granite Park, ARIZ. (1967 ed.) USGS tqm.  11 September 1993. Collectors: M.J. Wetzel (#1993-66), M.L. Biyal (INHS).
  • Colorado River (COR RM 220.15C), SE corner of cobble island (Gorilla Island?), in middle of Colorado River; in Lower Granite Gorge, Lake Mead National Recreation Area. U.T.M. Zone 12: 289930m East, 3967260m North. Elevation: 1,378ft. Diamond Peak, ARIZ. (1967 ed.) USGS tqm. 11 September 1993. Collectors: M.J. Wetzel (#1993-67) (INHS); M. Shaver (NAU), J. Stanford, B. Ellis (Univ. Montana-Flathead Biol. Sta.).

1993 sites located in Mohave County

  • Kanab Creek, from 20-120m upstream (N, NW) confluence with Colorado River (COR RM 143.3R) at Kanab Rapids; Grand Canyon National Park. U.T.M. Zone 12: 353890m East, 4028550m North. Elevation: 1,890ft. Kanab Point, Arizona (1988 prov. ed.) USGS tqm. 8 September 1993. Collectors: M.J. Wetzel (#1993-58), M.L. Biyal (INHS).
  • Backwater bay / marsh outflow channel, Colorado River (COR RM 204.0R), in Grand Canyon National Park. U.T.M. Zone 12: 288220m East, 3988880m North. Elevation: 1,500 ft. Whitmore Point SE, ARIZ. (7.5′ series, 1967 edition; NAD1927) quad map. 10 September 1993. Collectors: M.J. Wetzel (#1993-62) (INHS), with G. Richard “Dick” Marzoff (USGS), and T. Brinton (volunteer).
  • Spring Canyon Creek, 150-250m upstream ‘confluence’ with Colorado River (COR RM 204.3R); Grand Canyon National Park. U.T.M. Zone 12: 288060m East, 3988380m North. Elevation: 1,500ft. Whitmore Point SE, ARIZ. (1967 ed.) USGS tqm. 10 September 1993. Collector: M.J. Wetzel (#1993-63) (INHS).
  • Diamond Creek, 10-50m upstream confluence with Colorado River (COR RM 225.6L), at takeout point of COR raft expedition, near terminus of road (S) to Peach Springs; in Lower Granite Gorge, Lake Mead National Recreation Area. U.T.M. Zone 12: 285540m East, 3960310m North. Elevation: 1,345ft. Diamond Peak, Arizona (1967 ed.) USGS tqm. 12 September 1993. Collector: M.J. Wetzel (#1993-68) (INHS).

[page updated 26nov2021; mjw]

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