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    • Colorado River
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Patterns in the tidal  flats of the delta where the delta is swept by tidal encroachment from the Gulf of California. Evidence of the fresh water flow is observable as plant life turns green. Colorado...  -  Jack Dykinga
01635610
Jack Dykinga / Patterns in the tidal flats of the delta where the delta is swept by tidal encroachment from the Gulf of California. Evidence of the fresh water flow is observable as plant life turns green. Colorado...
Sonoran desert toad (Incilius alvarius) pair mating, with trail of spawn in water. Arizona, USA.  -  John Cancalosi
01633837
John Cancalosi / Sonoran desert toad (Incilius alvarius) pair mating, with trail of spawn in water. Arizona, USA.
Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.  -  Jack Dykinga
01628046
Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.
Toroweap Overlook in sunset light illuminating rim rocks with Colorado River far below. Grand Canyon National Park, Arizona, USA.  -  Jack Dykinga
01606315
Jack Dykinga / Toroweap Overlook in sunset light illuminating rim rocks with Colorado River far below. Grand Canyon National Park, Arizona, USA.
Toroweap Overlook in sunrise light illuminating rim rocks with Colorado River far below, Grand Canyon National Park, Arizona, USA.  -  Jack Dykinga
01606314
Jack Dykinga / Toroweap Overlook in sunrise light illuminating rim rocks with Colorado River far below, Grand Canyon National Park, Arizona, USA.
Aerial view of cliffs at the edge of Lake Powell, near Page, Arizona, on the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake...  -  Juan  Carlos Munoz
01526241
Juan Carlos Munoz / Aerial view of cliffs at the edge of Lake Powell, near Page, Arizona, on the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake...
Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.  -  Juan  Carlos Munoz
01526239
Juan Carlos Munoz / Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.
Horseshoe Bend in the Colorado river, near Page, Arizona, USA, February 2015.  -  Juan  Carlos Munoz
01526222
Juan Carlos Munoz / Horseshoe Bend in the Colorado river, near Page, Arizona, USA, February 2015.
Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.  -  Juan  Carlos Munoz
01526218
Juan Carlos Munoz / Aerial view of Lake Powell, near Page, Arizona and the Utah border, USA, February 2015. Lake Powell is a reservoir on the Colorado River, and is the second largest man made lake in the USA.
The humpback chubs (Gila cypha) amid Grand Canyon wall reflections in the Colorado River near the confluence with the Little Colorado River. Arizona. Vulnerable species.  -  Jack Dykinga
01402460
Jack Dykinga / The humpback chubs (Gila cypha) amid Grand Canyon wall reflections in the Colorado River near the confluence with the Little Colorado River. Arizona. Vulnerable species.
Colorado River Delta, with watercourse sculpted patterns eroded into the salt / silt flats near the Sea of Cortez, La Reserva del Golfo, Baja, Mexico  -  Jack Dykinga
01396378
Jack Dykinga / Colorado River Delta, with watercourse sculpted patterns eroded into the salt / silt flats near the Sea of Cortez, La Reserva del Golfo, Baja, Mexico
Coachella canal, water from Colorado river, California, USA  -  Daniel Heuclin
01362606
Daniel Heuclin / Coachella canal, water from Colorado river, California, USA
A Date palm (Phoenix dactylifera) plantation in the Coachella Valley near the Salton Sea. More than 90 percent of the dates produced in the United States are grown in this region, using Colorado River...  -  Jenny E. Ross
01292099
Jenny E. Ross / A Date palm (Phoenix dactylifera) plantation in the Coachella Valley near the Salton Sea. More than 90 percent of the dates produced in the United States are grown in this region, using Colorado River...
Sprinkler irrigation of a crop in California's Imperial Valley, using Colorado River water. California, USA  December 2008  -  Jenny E. Ross
01292093
Jenny E. Ross / Sprinkler irrigation of a crop in California's Imperial Valley, using Colorado River water. California, USA December 2008
South rim of Moran Point at sunrise, with the Colorado River below, Grand Canyon National Park, Arizona, USA  -  Jack Dykinga
01255425
Jack Dykinga / South rim of Moran Point at sunrise, with the Colorado River below, Grand Canyon National Park, Arizona, USA
Aerial view of alluvial patterns in the Upper Gulf and Colorado Delta Biosphere Preserve, El Golfo, Baja California, Mexico  -  Jack Dykinga
01193396
Jack Dykinga / Aerial view of alluvial patterns in the Upper Gulf and Colorado Delta Biosphere Preserve, El Golfo, Baja California, Mexico
Marble Canyon and the Colorado river, Grand Canyon NP, Arizona, USA  -  Jack Dykinga
01180210
Jack Dykinga / Marble Canyon and the Colorado river, Grand Canyon NP, Arizona, USA
Water from flash floods cascades down Marble Canyon into the Colorado River, Grand Canyon NP, Arizona, USA  -  Jack Dykinga
01163949
Jack Dykinga / Water from flash floods cascades down Marble Canyon into the Colorado River, Grand Canyon NP, Arizona, USA
Water running down Matkatimiba Canyon towards the Colorado River, Grand Canyon NP, Arizona, USA  -  Jack Dykinga
01163948
Jack Dykinga / Water running down Matkatimiba Canyon towards the Colorado River, Grand Canyon NP, Arizona, USA
Colorado River at Horseshoe Bend, Colorado River, Glen Canyon National Recreation Area, Arizona  -  Yva Momatiuk & John Eastcott
00645664
Yva Momatiuk & John Eastcott / Colorado River at Horseshoe Bend, Colorado River, Glen Canyon National Recreation Area, Arizona
Cumulus clouds and the Colorado River from North Rim, Grand Canyon National Park, Arizona  -  Yva Momatiuk & John Eastcott
00645655
Yva Momatiuk & John Eastcott / Cumulus clouds and the Colorado River from North Rim, Grand Canyon National Park, Arizona
Storm clouds over the Colorado River at Horseshoe Bend near Page, Arizona  -  Tim Fitzharris
00175816
Tim Fitzharris / Storm clouds over the Colorado River at Horseshoe Bend near Page, Arizona
Quaking Aspen (Populus tremuloides) grove in fall colors, Maroon Bells, Snowmass Wilderness, Colorado  -  Tim Fitzharris
00175663
Tim Fitzharris / Quaking Aspen (Populus tremuloides) grove in fall colors, Maroon Bells, Snowmass Wilderness, Colorado
Cottonwoods in autumn in the ponds of the refuge in evening light with reflections in the rising water level, near the Colorado River, Cibola National Wildlife Refuge, Arizona, USA. November 2020.  -  Jack Dykinga
01672431
Jack Dykinga / Cottonwoods in autumn in the ponds of the refuge in evening light with reflections in the rising water level, near the Colorado River, Cibola National Wildlife Refuge, Arizona, USA. November 2020.
Cottonwoods in autumn in the ponds of the refuge in morning light with reflections in the rising water level, near the Colorado River, Cibola National Wildlife Refuge, Arizona, USA. November 2020.  -  Jack Dykinga
01672424
Jack Dykinga / Cottonwoods in autumn in the ponds of the refuge in morning light with reflections in the rising water level, near the Colorado River, Cibola National Wildlife Refuge, Arizona, USA. November 2020.
Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta, where there is tidal encroachment from the Gulf of California. Waterfalls approximately 8 feet high pour off the delta with...  -  Jack Dykinga
01664845
Jack Dykinga / Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta, where there is tidal encroachment from the Gulf of California. Waterfalls approximately 8 feet high pour off the delta with...
Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta, where there is tidal encroachment from the Gulf of California. Waterfalls approximately 8 feet high pour off the delta with...  -  Jack Dykinga
01664844
Jack Dykinga / Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta, where there is tidal encroachment from the Gulf of California. Waterfalls approximately 8 feet high pour off the delta with...
Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.  -  Jack Dykinga
01664843
Jack Dykinga / Aerial view of alluvial patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.
Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico. 2019.  -  Jack Dykinga
01664842
Jack Dykinga / Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico. 2019.
Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.  -  Jack Dykinga
01664841
Jack Dykinga / Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.
Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.  -  Jack Dykinga
01664840
Jack Dykinga / Aerial view of patterns in tidal mudflats of Colorado River Delta where there is tidal encroachment from the Gulf of California. Baja California, Mexico, 2019.
Scarlet Monkey Flowers (Mimulus cardinalis) with White Firs (Abies concolor) amid steep canyon walls and cascades, Zion National Park, Utah, USA.  -  Jack Dykinga
01662880
Jack Dykinga / Scarlet Monkey Flowers (Mimulus cardinalis) with White Firs (Abies concolor) amid steep canyon walls and cascades, Zion National Park, Utah, USA.
Greenback cutthroat trout (Oncorhynchus clarkii stomias) swimming with its mouth open. Fish do this to take in more water across their gills hence they derive more oxygen from that water flow. Neota W...  -  Charlie Summers
01661568
Charlie Summers / Greenback cutthroat trout (Oncorhynchus clarkii stomias) swimming with its mouth open. Fish do this to take in more water across their gills hence they derive more oxygen from that water flow. Neota W...
Harlan's hawk (Buteo jamaicensis harlani) juvenile, perched on a branch above the Platte River, Denver, Colorado, USA. February.  -  Charlie Summers
01661567
Charlie Summers / Harlan's hawk (Buteo jamaicensis harlani) juvenile, perched on a branch above the Platte River, Denver, Colorado, USA. February.
Two Greenback cutthroat trout (Oncorhynchus clarkii stomias) in spawning stream prior to continuing upstream. Neota Wilderness Area, Colorado, USA.  -  Charlie Summers
01661566
Charlie Summers / Two Greenback cutthroat trout (Oncorhynchus clarkii stomias) in spawning stream prior to continuing upstream. Neota Wilderness Area, Colorado, USA.
Two Greenback cutthroat trout (Oncorhynchus clarkii stomias) moving upstream in spawning run, Neota Wilderness Area, Colorado, USA.  -  Charlie Summers
01661565
Charlie Summers / Two Greenback cutthroat trout (Oncorhynchus clarkii stomias) moving upstream in spawning run, Neota Wilderness Area, Colorado, USA.
Greenback cutthroat trout (Oncorhynchus clarkii stomias) gather under an overhanging bank during their annual spawning run in a Neota Wilderness stream. North Park, Colorado, USA. July.  -  Charlie Summers
01661564
Charlie Summers / Greenback cutthroat trout (Oncorhynchus clarkii stomias) gather under an overhanging bank during their annual spawning run in a Neota Wilderness stream. North Park, Colorado, USA. July.
Brook Trout (Salvelinus fontinalis) female ready to deposit her roe into a nest / redd. Rocky Mountain National Park, Colorado, USA. October.  -  Charlie Summers
01661563
Charlie Summers / Brook Trout (Salvelinus fontinalis) female ready to deposit her roe into a nest / redd. Rocky Mountain National Park, Colorado, USA. October.
Common goldeneye (Bucephala clangula) drake flies low over the South Platte River, Littleton, Colorado, USA. January.  -  Charlie Summers
01661561
Charlie Summers / Common goldeneye (Bucephala clangula) drake flies low over the South Platte River, Littleton, Colorado, USA. January.
Bear Creek waterfall flanked by Alder (Alnus sp). Uncompahgre National Forest, Colorado, USA. September 2019.  -  Jack Dykinga
01642570
Jack Dykinga / Bear Creek waterfall flanked by Alder (Alnus sp). Uncompahgre National Forest, Colorado, USA. September 2019.
Cap-rock formations near the Colorado River, Echo Cliffs in background.  Milky Way over boulders at base of the Vermilion Cliffs. Glen Canyon National Recreation Area, Arizona, USA. September 2019.  -  Jack Dykinga
01642562
Jack Dykinga / Cap-rock formations near the Colorado River, Echo Cliffs in background. Milky Way over boulders at base of the Vermilion Cliffs. Glen Canyon National Recreation Area, Arizona, USA. September 2019.
Sonoran desert toads (Incilius alvarius), pair in amplexus, Sonoran desert, Arizona, USA.  -  John Cancalosi
01637518
John Cancalosi / Sonoran desert toads (Incilius alvarius), pair in amplexus, Sonoran desert, Arizona, USA.
Arctic grayling (Thymallus arcticus) male gaping at the approach of another male in the background. North Park, Colorado, USA. June.  -  Charlie  Summers
01636043
Charlie Summers / Arctic grayling (Thymallus arcticus) male gaping at the approach of another male in the background. North Park, Colorado, USA. June.
Patterns in the tidal  flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes  waterfalls approximately eight feet high, as...  -  Jack Dykinga
01635634
Jack Dykinga / Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as...
Cienega de Santa Clara / Santa Clara wetlands which are supported by agricultural waste water from the U.S. and Mexico. Colorado River Delta region's estuary marshes. USA September 2019. Aerial su...  -  Jack Dykinga
01635624
Jack Dykinga / Cienega de Santa Clara / Santa Clara wetlands which are supported by agricultural waste water from the U.S. and Mexico. Colorado River Delta region's estuary marshes. USA September 2019. Aerial su...
Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...  -  Jack Dykinga
01635623
Jack Dykinga / Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...
Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...  -  Jack Dykinga
01635622
Jack Dykinga / Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...
Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...  -  Jack Dykinga
01635621
Jack Dykinga / Patterns in the tidal flats of the Colorado River Delta where the delta is swept by tidal encroachment from the Gulf of California. Receding tide causes waterfalls approximately eight feet high, as wa...
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