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    EPSG reference

    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
    Convert from this system now

    Area of use

    West35.04°
    South32.31°
    East42.38°
    North37.30°

    Projection parameters

    Projectionlcc
    Standard parallel 134.65
    Latitude of origin34.65
    Central meridian37.35
    Scale factor0.9996256
    False easting300000
    False northing300000
    Ellipsoidclrk80ign
    Unitsm
    Helmert shift to WGS84-190.421,8.532,238.69,0,0,0,0
    proj4
    +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
    WKT (ESRI)
    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.

    Related systems

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    FAQ

    What is EPSG:22770?
    It is the coordinate system “Deir ez Zor / Syria Lambert”, a Projected (metres) system in the Lambert Conformal Conic family, identified worldwide by the code EPSG:22770.
    What datum does it use, and how accurate is it?
    It is based on the clrk80ign ellipsoid and it carries Helmert parameters to WGS84. The residual at the test point is about ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
    Where is this system used?
    It is used in Syria. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:22770 to WGS84?
    Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±0.1 m residual.

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