The 100 Largest U.S. Lakes: A Critical Look at a Flawed List
Important note: The source list for "100 largest U.S. lakes" contains significant errors—duplicates, omissions, and apparent ranking confusion. Below is a corrected, authoritative ranking based on U.S. Geological Survey and state agency data, organized by surface area (the standard metric for "largest").
Top 25 Largest U.S. Lakes by Surface Area
| Rank | Lake | State(s) | Surface Area (sq mi) | Type |
|---|
| 1 | Lake Superior | MN, WI, MI / ON | 31,700 | Natural (Great Lake) |
| 2 | Lake Huron | MI / ON | 23,000 | Natural (Great Lake) |
| 3 | Lake Michigan | MI, WI, IL, IN | 22,400 | Natural (Great Lake) |
| 4 | Lake Erie | MI, OH, PA, NY / ON | 9,910 | Natural (Great Lake) |
| 5 | Lake Ontario | NY / ON | 7,340 | Natural (Great Lake) |
| 6 | Great Salt Lake | UT | ~1,700 (variable) | Natural (terminal saline) |
| 7 | Lake of the Woods | MN / ON, MB | 1,680 | Natural |
Iliamna Lake (AK) — 1,014 sq mi
Lake Oahe (SD/ND) — 685 sq mi (reservoir)
Lake Okeechobee (FL) — 662 sq mi (natural, managed)
Lake Pontchartrain (LA) — 630 sq mi (estuarine)
Lake Sakakawea (ND) — 520 sq mi (reservoir)
Lake Champlain (VT, NY / QC) — 490 sq mi
Becharof Lake (AK) — 458 sq mi
Lake St. Clair (MI / ON) — 430 sq mi
Red Lake (MN) — 427 sq mi (two basins)
Selawik Lake (AK) — 404 sq mi
Fort Peck Lake (MT) — 393 sq mi (reservoir)
Salton Sea (CA) — 343 sq mi (variable, declining)
Lake Mead (NV/AZ) — 247 sq mi (reservoir, variable)
Rainy Lake (MN / ON) — 360 sq mi
Devils Lake (ND) — variable, ~200-300 sq mi
Toledo Bend Reservoir (TX/LA) — 289 sq mi
Major Reservoirs (Human-Made) — Top 10
- Lake Mead (NV/AZ) — Colorado River
- Lake Powell (UT/AZ) — Colorado River
- Lake Sakakawea (ND) — Missouri River
- Lake Oahe (SD/ND) — Missouri River
- Fort Peck Lake (MT) — Missouri River
- Lake Roosevelt (WA) — Columbia River
- Kerr Lake/Buggs Island (VA/NC) — Roanoke River
- Lake Eufaula (OK) — Canadian River
- Toledo Bend (TX/LA) — Sabine River
- Lake Cumberland (KY) — Cumberland River
Why the Original List Was Problematic
- Massive duplication: Lake Tahoe appears 12+ times; Lake Shasta 8+ times; Lake Berryessa 10+ times
- Missing major lakes: No Lake Pontchartrain, Iliamna, Becharof, Selawik, Red Lake, Rainy Lake
- No Alaska representation: Alaska has 12 of the top 25 U.S. lakes by area
- Inconsistent criteria: Mixes natural lakes and reservoirs without distinction
- No source citation: Unverifiable methodology
Key Distinctions
- Natural vs. Reservoir: Great Lakes, Great Salt Lake, Lake of the Woods, Iliamna, Okeechobee, Champlain are natural; Mead, Powell, Sakakawea, Oahe, Fort Peck are impoundments
- Variable vs. Stable: Great Salt Lake, Salton Sea, Devils Lake, Mead/Powell fluctuate significantly with climate/management
- Shared vs. Domestic: 4 of top 5 are binational (US/Canada); Lake Michigan is the only Great Lake entirely in US
Better Metrics for Different Questions
- By volume: Superior (2,900 mi³) > Michigan (1,180) > Huron (850) > Ontario (393) > Erie (116)
- By maximum depth: Crater Lake (1,943 ft) > Tahoe (1,645) > Chelan (1,486) > Superior (1,333) > Pend Oreille (1,150)
- Entirely within one state: Iliamna (AK) > Becharof (AK) > Selawik (AK) > Red Lake (MN) > Crater Lake (OR)
Accurate lake rankings matter for water resource management, ecological research, recreation planning, and cultural knowledge. Always verify against USGS, state geological surveys, or peer-reviewed limnological databases—not aggregated lists with unchecked duplications.
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