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RIVER TIDES MAP

Due to the very slight drop of the Amazon River, tides are able to penetrate far upstream, about 600 miles to the town of Obidos. Due to the movement of salt water in and out of the estuary region, the flora and fauna are distinct from areas where tidal effects are not found.

Click below to see the maps and information on the river tides

mouth of the Amazon

sampling stations


MOUTH OF THE AMAZON

river tides map

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This map shows the area around the mouth of the Amazon and Para rivers. The numbers indicate locations where tidal data is collected from NOAA and other sources). The red dashed line is a "zero-line" used to calculate distances from this arbitrarily defined "mouth" for the fluvio-tidal systems. The rivers and coastlines were derived from World Database II and digital topography from a scientific paper. The bars show a distance scale (left) and elevation (right). The dark area in the upper right corner of the map indicates where the continental shelf drops off to the deep ocean.

(Map courtesy of Dr. Allen Archer, Department of Geology, Kansas State University)

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SAMPLING STATIONS

river tides map

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This map shows a series of sampling stations used to measure tidal flow and other changes in the river. Stations 5035 through 5049 refer to NOAA navigational tidal stations. The distance from the mouth of the river to the edge of the map is about 1500 miles.

(Map courtesy of Dr. Allen Archer, Department of Geology, Kansas State University)

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Learn more about the river tides map


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