Contreras Rodriguez

Does anyone know where Mesquite de Charco is located?

I have been looking for this family for a long time and recently found their marriage record 6 March 1803. The following is their IM

https://familysearch.org/ark:/61903/3:1:33SQ-GGLV-T7Y

Jose Tomas Rodriguez (B:1776 in Camarillo, Mesquite de Charco) and Maria Dorothea Contreras en Los Contreras, Mesquite de Charco (1783)

I have seen this name before but can't remember if it was in Zacatecas, or San Luis Potosi. Los Contreras, I have seen this some time ago and can't remember where and I've looked through some records of the contreras and can't find the location. two of their children were born in Lagunillas, but the records are missing or illegible another was born in las Vuidas, I believe in that is in Asientos, Aguascalientes.

Thanks for your help!!