Mason Island – Island in St. Charles, Missouri

Identifier

GNIS Feature ID 422249

Location

State Missouri

County St. Charles

Feature Class Island

Coordinates

DMS

38°57'40"N 90°27'34"W

Decimal Degrees

38.9611597, -90.4595608

Elevation

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USGS 7.5′ Quad Map

Quad Name Grafton

Order Printed Topo Map – MyTopo

Protected Areas

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Nearest Populated Place

Camden

0.9 mi NNW

Also Known As

Mason's Island Masons Island

Hydrography

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Description

At the junction of the Illinois and Mississippi Rivers

Nearby Features

Island 525 Island · 0.4 mi NW
Illinois River Stream · 0.7 mi NNE
Mason Chute Channel · 0.7 mi SE
Dagett Hollow Valley · 0.8 mi NNE
Camden Hollow Valley · 0.8 mi NNW
Airport Lake Lake · 0.8 mi SE
Camden Populated Place · 0.9 mi NNW
Mason Hollow Valley · 0.9 mi NE
Island 526 Island · 0.9 mi ENE
Perry Island Island · 1.1 mi SSW

Data Sources & Attribution

Feature data: U.S. Geographic Names Information System (GNIS) – U.S. Geological Survey.
Elevation: USGS Elevation Point Query Service (EPQS).
Topographic basemap: USGS National Map.
Quad map thumbnails: USGS US Topo.
Watershed boundaries: USGS Watershed Boundary Dataset (WBD).
Protected areas: USGS Protected Areas Database (PAD-US) – Gap Analysis Project.
Photos (where shown): Wikidata / Wikimedia Commons – individual licenses apply.
Printed map ordering: MyTopo Map Store.