EPSG:22770 — Deir ez Zor / Syria Lambert
Deir ez Zor / Syria Lambert (EPSG:22770) — a Projected (metres) system on the clrk80ign datum, used in Syria. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free conver…
At a glance
- EPSG
- 22770
- Name
- Deir ez Zor / Syria Lambert
- Kind
- Projected (metres)
- Family
- Lambert Conformal Conic
- Ellipsoid
- clrk80ign
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Syria
Area of use
| West | 35.04° |
| South | 32.31° |
| East | 42.38° |
| North | 37.30° |
Projection parameters
| Projection | lcc |
| Standard parallel 1 | 34.65 |
| Latitude of origin | 34.65 |
| Central meridian | 37.35 |
| Scale factor | 0.9996256 |
| False easting | 300000 |
| False northing | 300000 |
| Ellipsoid | clrk80ign |
| Units | m |
| Helmert shift to WGS84 | -190.421,8.532,238.69,0,0,0,0 |
+proj=lcc +lat_1=34.65 +lat_0=34.65 +lon_0=37.35 +k_0=0.9996256 +x_0=300000 +y_0=300000 +ellps=clrk80ign +units=m +no_defs +towgs84=-190.421,8.532,238.69,0,0,0,0
PROJCS["Deir ez Zor / Syria Lambert",GEOGCS["GCS_Deir ez Zor / Syria Lambert",DATUM["D_Clarke_1880_IGN",SPHEROID["Clarke_1880_IGN",6378249.2,293.4660212936269],TOWGS84[-190.421,8.532,238.69,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",300000],PARAMETER["False_Northing",300000],PARAMETER["Central_Meridian",37.35],PARAMETER["Standard_Parallel_1",34.65],PARAMETER["Scale_Factor",0.9996256],PARAMETER["Latitude_Of_Origin",34.65],UNIT["Meter",1],AUTHORITY["EPSG","22770"]]
Sample conversion
Syria capital: WGS84 36.27650, 33.51380 → EPSG:22770 200160.777, 174585.216
Values are within ±0.1 m at the test point.
About the Lambert Conformal Conic family
Deir ez Zor / Syria Lambert uses the Lambert Conformal Conic projection — a cone-based, angle-preserving grid well suited to territories that stretch east–west, defined by one or two standard parallels. It is common for national mapping and for oil-and-gas grids across North Africa and Arabia.
Scale is true along the standard parallel(s) and grows away from them; for precise distance work reduce ground distances to grid using the point scale factor. Confirm both standard parallels and the datum before trusting imported coordinates.
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