United States Geological Survey, and Natural Resource Conservation S, 20011115, Digital Overlay for Soils of Calcasieu Parish, Louisiana.: USGS, Biological Resources Division's, and NWRC, Lafayette, Louisiana, US.
Planar coordinates are encoded using Coordinate Pair
Abscissae (x-coordinates) are specified to the nearest .61
Ordinates (y-coordinates) are specified to the nearest .61
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 1980.
The semi-major axis of the ellipsoid used is 6378137.0.
The flattening of the ellipsoid used is 1/298.257.
| Value | Definition |
|---|---|
| AE | Allemands Peat |
| AN | Aquents, Frequently Flooded |
| AR | Arat Mucky Silt Loam |
| Ac | Acadia Silt Loam, 1 to 3 Percent Slopes |
| BA | Barbary Mucky Clay |
| BB | Basile and Guyton Silt Loams, Frequently Flooded |
| Bh | Bienville Loamy Fine Sand, 1 to 3 Percent Slopes |
| Bn | Bienville-Cahaba-Guyton-Complex, Gently Undulating |
| Bo | Brimstone Silt Loam |
| CO | Clovelly Muck |
| Cd | Caddo-Messer Silt Loams |
| Ch | Cahaba Fine Sandy Loam, 1 to 3 Percent Slopes |
| Cr | Crowley-Vidrine Silt Loams |
| Dm | Dumps |
| GB | Ged Clay |
| GC | Gentilly Muck |
| GU | Guyton and Bienville Silt Loam, Frequently Flooded |
| Ge | Glenmora Silt Loam, 1 to 3 Percent Slopes |
| Gg | Gore Silt Loam, 1 to 5 Percent Slopes |
| Go | Guyton Silt Loam, Occasionally Flooded |
| Gy | Guyton-Messer Silt Loams |
| Ju | Judice Silty Clay Loam |
| Kd | Kinder-Messer Silt Loams |
| LE | Larose Mucky Clay |
| Lt | Leton Silt Loam |
| Lu | Leton Silt Loam, Occasionally Flooded |
| Mb | Blevins Fine Sandy Loam, 1 to 3 Percent Slopes |
| Mg | Messer Silt Loam, 1 to 8 Percent Slopes |
| Mh | Messer-Guyton Silt Loams, Gently Undulating |
| Mn | Midland Silty Clay Loam |
| Mr | Morey Loam |
| Mt | Mowata-Vidrine Silt Loams |
| Pt | Pits, Sand |
| UA | Udifluvents, 1 to 20 Percent Slopes |
| UN | Una Silty Clay Loam, Frequently Flooded |
| Up | Urban Land |
| Ur | Urbo Silty Clay Loam, Occasionally Flooded |
| Vn | Vidrine Silt Loam, 1 to 3 Percent Slopes |
| water | Water |
The NWRC acknowledges the NRCS for use of data derived from the SSURGO soils maps for Calcasieu Parish, Louisiana.
USGS, Biological Resource Division's NWRC
c/o Steve Hartley
Senior Geographer/GIS Analyst
700 Cajundome Blvd
Lafayette, Louisiana 70506
337-266-8543 (voice)
337-266-8616 (FAX)
steve_hartley@usgs.gov
- Hours_of_Service: 8:00 am to 4:00 pm CST Monday through Friday
To provide digital overlays of the soils of Louisiana by parish for the NRCS, that can be updated and used as a layer in a GIS application.
United States Department of Agr, in cooperation with the Louisiana , Unknown, Soil delineated aerial photography: USDA, NRCS, Alexandria, Louisiana.
USDA, NRCS, in cooperation with Louisiana A, 19820101, Soil Survey of Calcasieu Parish, Louisiana: USDA, NRCS, Alexandria, Louisiana.
National Digital Orthophoto Program (NDOP)., 19981125, Digital Orthophoto Quarter Quadrangles (DOQQ): USDA, NRCS, and National Cartography and Geospatial Center., Fort Worth, Texas.
The accuracy is not based on a formal quantitative assessment and was based on the judgement of the soil conservationist in the field. Ground truthing was not performed for this project. To attain a better estimate of accuracy, a formal re-evaluation of the soils of Calcasieu Parish, Louisiana would be necessary to see if there are areas where discrepancies exist.
Not applicable
Not applicable
All data sets were derived in the same general format. All soil information was transferred onto transparent mylar sheets, for each topographic quadrangle in the parish, from the existing State Soils Survey for the parish. Mylar overlays were digitized (entered at an error of less than .005 for geographic positioning) and/or scanned then rectified. Each quadrangle mylar overlay was digitized and/or scanned separately and therefore may represent different amounts of human and/or equipment error. Land-water interfaces were corrected by best judgement on-screen digitizing to Digital Orthophoto Quarter Quadrangles (DOQQ's). For parishes created before DOQQ's were available, the land-water interfaces were included on the mylar sheets. For parishes created after DOQQ's became available, the land-water interfaces were digitized on-screen separately from the soil lines; therefore they are not included on the mylar sheets. The land-water coverages and soil line coverages were then appended and cleaned to create the total quadrangle coverage. Each quadrangle was edited individually, and then all quadrangles in the parish were joined together. Once joined together, editing was done along all quadrangle boundaries to match lines and labels. When line or label errors were found, all corrections were made upon approval of the NRCS. Problems with labeling occurred along adjoining parish boundaries, due to different labeling conventions in each parish. A standard labeling convention system for the whole state of Louisiana must be created to remedy the problem. Until this standard is developed, the following labeling tactics have been used. New labels were created for parish coverages in order to match labels for adjoining parishes. Changes were dependent upon soil definition, polygon size, and cases of duplication problems. A duplication problem means the label already existed in the parish coverage and is a different unit altogether and therefore can not be added to that legend. New labels were also created when new lines were needed to reduce confusion. Lines were added in special cases: 1) if it was advantageous to extend an unit a small portion into the next parish, rather than renaming the whole polygon; and 2) if the two units adjoining are similar, differing only in transitional phase, then a line was added at the most logical area of transition, aided by imagery, in order to keep the two units separate. New labels were created in the coverages which the line was added as long as there was not duplication problems. If major complications occurred when trying to add labels, these areas were left as is, waiting for a standard soil convention. These problems can be fixed after a standard Louisiana State soil code convention is established. The attribute legend for Calcasieu Parish is found in the Entity and Attribute Section. This includes current modifications for completeness with surrounding parishes. All changes to the Calcasieu Parish soils lines and legend are documented in a report to be stored with the state soils archives at the NRCS in Alexandria, LA. Modifications to the Calcasieu Parish legend include the following: Added Lu, from Jefferson Davis; Added soil name Bienville to definition of GU, from Jefferson Davis. A soil code name modification occurred to Mb, changing Malbis to Blevins, from Beauregard.
All polygons are closed, and have been cleaned in an editing environment. Adjacent polygons do not have identical attributes. Each polygon has one and only one attribute.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- It is strongly recommended that these data are directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes.
- Use_Constraints:
- Acknowledgment of the NWRC as a data source would be appreciated in products developed from this data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from this data would also be appreciated by NWRC staff. Users should be aware that comparisons with other data sets for the same area from other time periods might be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. This data is not a legal document and is not to be used as such. This data is not STATSGO or SSURGO certified.
USGS National Wetlands Research Center
c/o Steve Hartley
Senior Geographer/GIS Analyst
700 Cajundome Blvd.
Lafayette, Louisiana 70506
USA
337-266-8543 (voice)
337-266-8616 (FAX)
steve_hartley@usgs.gov
- Hours_of_Service: 8:00 am to 4:00 pm CST Monday through Friday
NRCS Soil Maps for Calcasieu Parish
NWRC Standard Data Liability Disclaimer (April 1997): Although these data have been processed successfully on a computer system at the National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. NWRC shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the NWRC Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and NWRC interests. This digital data is not SSURGO (Soil Survey Geographic Database) certified. The data is in preliminary form and should be used with caution.
| Data format: | ARCE (version 7.1.0) |
|---|---|
| Network links: |
<http://www.nwrc.gov> |
Not available
Joan C. Kester
USGS National Wetlands Research Center
Geographer
700 Cajundome Blvd
Lafayette, LA 70506
USA
337-266-8611 (voice)
337-266-8616 (FAX)
joan_kester@usgs.gov
- Hours_of_Service: 8:00 am to 4:00 pm CST Monday through Friday