The vulnerability map shows the relative vulnerability of the hydrogeologic basins, and is based on average values for each entire basin. The map is acceptable for evaluating relative vulnerability of the basins, but it should not be used in place of site-specific assessments. The map does not show areas that will be contaminated or areas that cannot be contaminated. Whether a specific site will ever have groundwater contamination depends on the likelihood of contaminant release, the type and quantity of contaminant released, and the hydrogeologic characteristics at that location.
The vulnerability assessment was based on available data. The DRASTIC indices and vulnerability map can be updated as additional or new information becomes available. The OWRB welcomes any additional data, references, or interpretations that may be used in determining the vulnerability of groundwater. Results from this study can be used in combination with other information (such as land use, potential sources of contamination, water quality, OWRB aquifer classifications, population density, and beneficial uses of the aquifer) to identify areas where special attention or protection efforts are warranted.
The data represent the results of data collection and/or processing for the specific OWRB activity or purpose described above. As such, the data are valid only for their use, content, time, and accuracy specifications determined or intended by, or acceptable to, the OWRB. These data are not guaranteed to be useable, timely, accurate, or complete. The user is responsible for any use of these data other than their use by the OWRB, and for the results of any application of the data for other than the purpose intended by the OWRB. Although these data have been processed successfully on a computer system at the OWRB, NEITHER THE STATE OF OKLAHOMA NOR THE OWRB NOR ANY OTHER AGENCY THEREOF, NOR ANY OF THEIR EMPLOYEES, CONTRACTORS, OR SUBCONTRACTORS, MAKE ANY WARRANTY, EXPRESS OR IMPLIED, NOR ASSUME ANY LEGAL LIABILITY OR RESPONSIBILITY FOR OR AS TO THE ACCURACY, COMPLETENESS, USEFULNESS OR MERCHANTABILITY OF ANY DATUM, SOFTWARE, INFORMATION, APPARATUS, PRODUCT, OR PROCESS DISCLOSED, NOR REPRESENT THAT ITS USE WOULD NOT INFRINGE ON PRIVATELY OWNED RIGHTS. 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. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences.
Vulnerability classification and corresponding DRASTIC indices DRASTIC Index Vulnerability Classification <80 Very Low 80-89 Low 90-119 Moderate 120-139 High 140-160 Very High