CIRES scientists have finalized an update to the northern portion of the National Centers for Environmental Information’s (NCEI) U.S. West Coast - Central Pacific Coastal Relief Model (CRM). The update includes 225, 1 arc-second, quarter-degree tiles located between 123.25 - 127 degrees W longitude and 40.25 - 44 degrees N latitude. The spatial extents of the CRM were determined based on the current NCEI U.S. Coastal Relief Model Vol.7 - Central Pacific and significant bathymetric features such as the Mendocino Ridge. These extents were divided into northern and southern halves to improve data download and processing efficiency. To facilitate the CRM generation, CIRES scientists developed new code functionality in the CUDEM Github Repository to programmatically filter anomalous values from bathymetric datasets, thus enabling scientists to incorporate bathymetric data that would otherwise have been discarded in the final DEM generation. As a result, the northern portion of the CRM has complete data coverage and incorporates almost every bathymetric multibeam survey available from NCEI’s repository within the CRM region. Concurrently, NCEI/CIRES Scientists are updating the southern portion of the CRM, which spans from 120.75 - 127 degrees W longitude and 37 - 40.25 degrees N latitude. Data downloaded and processed for this CRM include bathymetric and topographic data from the NOAA NCEI Multibeam Bathymetry Database, NOAA ENC Charts, NOAA NOS Hydrographic Surveys and BAGs, NOAA OCM Sea-Level Rise Viewer DEMs, USACE eHydro, GMRT multibeam swath data, NCEI CUDEMs, NGDC community-based DEMs, USGS CoNED, and FABDEM. After being downloaded, the bathymetric data were processed and vertically transformed to NAVD88 for consistency with the topographic data. A preliminary version of the Southern CRM is scheduled to be completed in the Fall of 2024.