Data Rescue Project
https://www.datarescueproject.org/
The Data Rescue Project is a collaborative effort among members of different associations and serves as "clearinghouse for data rescue-related efforts and data access points for public US governmental data that are currently at risk." The Project has compiled a list of efforts to rescue and archive government sites and data that is available via https://www.datarescueproject.org/current-efforts/. The Project also has a Data Rescue Tracker that identifies efforts to rescue specific datasets and sources. See the Project's FAQ for information about joining the Project and participating in data rescue efforts.
Data and Screening Tools: Working Agreements
https://screening-tools.com/get-involved
The Public Environmental Data Partners encourages volunteers to help their efforts in scraping, archiving, and analyzing data related to the environment and to public health.
Tips for Using DataLumos
https://archive.icpsr.umich.edu/datalumos/tips
The DataLumos project is an effort by the ICPSR at the University of Michigan to archive federal government data. DataLumos welcomes both deposits of at-risk data and suggestions for data that should be deposited. See https://aeadataeditor.github.io/aea-de-guidance/creating-datalumos-deposit for step-by-step guidance on depositing data with DataLumos. See https://www.icpsr.umich.edu/web/about/cms/6103 for additional information about efforts by the ICPSR to safeguard at-risk government data collections.
Volunteer Interest - Environmental Data and Governance Initiative
https://envirodatagov.org/volunteer/
The Environmental Data and Governance Initiative welcomes volunteers who wish to participate in its efforts to promote greater collection of and availability of environmental data and transparency in environmental decision-making.