| nagsigs.org | NAGS. North American Geosynthetics Society |
| ieca.org | International Erosion Control Association |
| iagi.org | IAGI. International Association of Geosynthetic Installers |
| gmanow.com | GMA. Geosynthetic Materials Association |
| geosyntheticssociety.org | IGS. International Geosynthetics Society |
| geoinstitute.org | Geo-institute Main Page |
| adsc-iafd.com | ADSC. The International Association of Foundation Drilling |
| jsece.or.jp | Japan Society of Erosion Control Engineering |
| constr.com | Erosion Control Headquarters |
| vt.edu | Center for Geotechnical Practice and Research |
United States , Arizona , Phoenix