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Revision Summary: 422218072165702 QUABBIN RESERVOIR AT TWENTY FT

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Approved water data are considered published record, but on occasion changes or deletions (revisions) must be made to data after they are approved. Data revisions are rare because of USGS quality assurance practices, including documentation of all data before they are officially approved.

This page presents text explanations for data revisions at this monitoring location. Changes to data also are indicated with revision qualifier codes alongside the data. Text explanations before 2017 are not necessarily available online, but can be requested.

Site-level Revision Statements:

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Time-series Revision Statements:

 No time-series identifiers are available for this site.