Coordinate System Parameters

Chippewa County Grid: Wisconsin County Coordinate System

• Datum: NAD83/91
• Wisconsin HARN
• Projection: Lamber Conformal Conic
• Design Elevation: 304.80 m (1000 ft)
• Geoidal Separation: -29.258 m
• Origin Longitude (Central Meridian): 91° 17' 40"
• Origin Latitude: 44° 34' 52"
• False Easting:
• 60,045.72009 m (197,000 ft)
• False Northing: 0 m (0 ft)
• North Latitude (First Parallel): 45° 08' 30"
• South Latitude (Seconde Parallel): 44° 48' 50"

Chippewa County Modified GRS 80 Ellipsoid

• Semi-major axis a: 6,378,137.0 m + 304.8 m - 29.258 m = 6,378,412.542 m
• Semi-minor axis b: 6,356-752-3141403 m + 304.8 m - 29.258 m = 6,357-027-8561403 m
• Inverse flattening (1/f): 298.270107115315 m
• Star-net: B = 304.8 m - 29.258 m = 275.542 m