Tidal and River Datums in the Sacramento River.
Abstract
The problem of extending vertical tidal and river datums through the ocean/river transition zone of navigable rivers is examined through the analysis of water-level measurements from an ocean and a river station of San Francisco and Sacramento, California. Modification of the tides after passage into the transition zone was analyzed by decomposing the raw water-level data for both stations into a tidal and a non-tidal component, and comparing the tidal components for tide range ratios and time differences. It was determined that as the mean river stage increases, the range ratio and the effective tide wave speed both decrease and the symmetry of the tide wave changes. Of the six standard Pacific Coast tidal datums and five river datums defined in this study, MSL-MRL is the only common tidal/river datum that is continuous through the transition zone. The MLLW ocean charting datum and the MHW tidal waterfront property boundary datum can be carried upriver, where both effectively merge with the MRL, by a separation-addition procedure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1979
- Accession Number
- ADA070366
Entities
People
- Fred Carl Zeile Iii
- Warren C. Thompson
Organizations
- Naval Postgraduate School