CALIFORNIAWATER MONITORING PROJECT
Sacramento–San Joaquin Delta-77 01 1965

The database behind the fieldwork

Every investigation
starts with a record.

Connect forestry-herbicide products, treatment locations, dates, landowners, and applicators to the original documents.

The information behind the investigation

Know what was used.
Know where to look.

We build and maintain an up-to-date forestry-herbicide application database that connects products, dates, treatment locations, landowners, and applicators.

The database helps us ask better field questions: which treatment area is relevant, what chemicals should be considered for testing, what timing matters, and which original records support that understanding.

The database is a tool for monitoring and source investigation—not a substitute for sampling or laboratory evidence.

Inside the record

Connect the details.

This describes the information we seek to document. It is a record structure, not a display of live application data.

Project & treatment site

Project names and identifiers, county, reported location, treatment maps or boundaries, and acreage.

Products & active ingredients

Product trade names, active ingredients, reported amounts or rates where available, and the original record that supports each entry.

Timing & application method

Planned dates, actual application dates, method, relevant notices, and later corrections or confirmations.

Landowner & applicator

Names and roles recorded in the application and project documents, with clear distinction between an owner, manager, and applicator.

Source documents

Herbicide-use reports, application notices, maps, and other records behind the entry. Preserve the source and identify missing information.

Investigation context

Links to relevant sampling information, maps, weather, laboratory records, and analysis when available for an investigation.

A traceable record

Preserve the original.
Explain the interpretation.

SOURCE

Keep the document.

Maintain the original report or notice so the underlying information can be checked. An extracted database field should not replace the record it came from.

LOCATION

Describe the precision.

Distinguish a reported project location, an approximate mapped area, and a verified treatment boundary. Do not imply a level of detail that the source does not provide.

REVISION

Record what changed.

Keep planned and completed applications distinct. Record revised maps, changed dates, corrected product information, and unresolved differences between sources.

Records that inform fieldwork

From information
to investigation.

Application records help guide the sampling plan and the chemicals to investigate. They also help interpret what was measured, alongside timing, weather, drainage pathways, and possible competing sources.

A record of herbicide use does not itself establish runoff. A chemical detection does not by itself identify a particular project. The investigation connects those pieces and explains how strong the connection is.

Our evidence standard

Have timely application information?

See the details that can support monitoring before and after a forestry treatment.

Application notifications