Home ConservationFishesSalmonid MonitoringCMPCalifornia Monitoring Plan Sample Frame

California Monitoring Plan Sample Frame

Sample Frame Development

The large geographic extent of salmonid populations throughout California are too vast to be measured completely. As a result, data must be inferred from a sample of measurements. To be consistent throughout the state, the California Monitoring Plan (CMP) created a sampling design based on the random selection of sample stream segments. This design allows for statistical inference to be made throughout the entire area within the sample frame.

Sample Frame Status Definitions

California Sample Frame Status
California Sample Frame Status (PDF)

Final: field reconnaissance complete; final sample draw complete; project is using rotating panel or census sampling

Working: initial sample draw complete; reconnaissance sampling is ready or underway

In Development: limits of anadromy defined or in process, GIS processing started, but sample frame is not ready to be used in surveys

Possible Future Frame: no work has been started to develop the sample frame

Example of a sample frame for the Carmel River watershed
Example of a sample frame for the Carmel River watershed
Redd survey in the big sur river shows two staff standing in a river, one recording data and the other measuring a redd with a stick.
Steelhead redd surveys in the Big Sur River sample frame (CDFW Photo by Matt Michie)