Lakes and Rivers (0)
Aggregate Resources 1997 (1)
| Des Moines Lobe, poor-moderate, water table < 20 ft, thickness > 20 ft |
| Des Moines Lobe, moderate-good, water table < 20 ft, thickness > 20 ft |
| Superior Lobe, good-excellent, water table < 20 ft, thickness > 20 ft |
| Des Moines Lobe, poor-moderate, water table > 20 ft, thickness 10-40 ft |
| Des Moines Lobe, moderate-good, water table > 20 ft, thickness 10-40 ft |
| Superior Lobe, good-excellent, water table > 20 ft, thickness 10-40 ft |
| Des Moines Lobe, moderate-good, water table > 20 ft, thickness > 40 ft |
| Superior Lobe, good-excellent, water table > 20 ft, thickness > 40 ft |
| Dolostone, thickness > 30 ft |
| Dolostone, thickness 10-30 ft |
| Dolostone, thickness < 10 ft |
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