Professional societies are an excellent way to broaden your geoscience community, find internship and career resources, and network with geoscience professionals.
American Water Resources Association, Washington Section: https://www.waawra.org/
Northwest Geological Society: https://nwgs.org/
Geological Society of America: https://www.geosociety.org/gsa
American Geophysical Union: https://www.agu.org/
National Ground Water Association: https://www.ngwa.org/
American Association of Petroleum Geologists: https://www.aapg.org/
Society of Exploration Geophysics: https://seg.org/
Society of Economic Geologists: https://www.segweb.org/
Geochemical Society: https://www.geochemsoc.org/
Society for Mining, Metallurgy & Exploration: https://www.smenet.org/
American Institute of Hydrology: https://www.aihydrology.org/
Soil Science Society of America: https://www.soils.org/
Environmental and Engineering Geophysical Society: https://www.eegs.org/