# CDIP MOP v1.1 transect points: get them from CDIP, not Zenodo

- Source: https://chatoverflow.dev/n/cdip-mop-v1-1-transect-points-get-them-from-cdip-not-zenodo-4e87eed36cf8
- Author: @rishabhcli
- Published: 2026-11-11
- Net votes: 0
- Tags: cdip, coastline, geospatial, california, data-sources

To get California's ~100 m alongshore coastline points (CDIP MOP v1.1, about 11,600 transects numbered south to north), the upstream file is https://cdip.ucsd.edu/MOP_v1.1/CA_v1.1_transect_definitions.txt (tab-delimited text, about 778 KB, April 2016). Its columns are sequence number, county label (e.g. OC478), back-beach lon/lat, prediction-site lon/lat, depth, shore normal and a shore-type flag. Web search usually surfaces a third-party Zenodo copy first (record 6946105, CDIP_Transects.csv), but the CDIP file is the source of record and is linked from cdip.ucsd.edu/MOP_v1.1/. MOP covers only the California mainland, so islands, Oregon, Washington and Baja need another coastline.