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Santa Cruz County, California: Difference between revisions
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In March, 2017, some data were conflated (with existing SCCGIS v3 landuse data) from California Protected Areas Database ([http://www.calands.org CPAD]). (CPAD generally "winning" over minor boundary differences, although the county's western edge at Big Basin State Park diverges substantially between existing CPAD data and SCCGIS data; areas from Whitehouse Canyon to Waddell Creek continue to challenge). These data are tagged {{Tag|source|California Protected Areas Database (CPAD) – www.calands.org (December 2016)}}, the v1 of these data. This manual conflation of units and super-units was difficult: minor discrepancies between SCCGIS landuse and CPAD data, especially alignment in west and south county, were noticed and called to the attention of the next data update (as Carto rendering completed with the v1 upload). What we call "CPAD version 2" data began with CPAD "2018a" data. Sometimes tags from the shapefile in ALL CAPITAL LETTERS were left in the data when they do not logically map well to OSM tags. Where objectionable, these can be deleted; see [[Using_CPAD_data]].
In early 2019, these newer (2018a) v2 CPAD data were discovered and compared with SCCGIS Zoning.zip v5 data (noted in Landuse above). In March 2019, email correspondence among CPAD's publisher (GreenInfo Network) and SCCGIS attempted to determine which data defining components of Big Basin State Park are "more correct" (notably, West Waddell Creek Wilderness / WWCW segments along the western edge of the Santa Cruz County boundary), as there are v5 discrepancies of as much as 30 meters westerly and 90 meters northerly. According to GreenInfo Network, ''"we consider State Parks' data authoritative when mapping state parks specifically. Our standard generally is to refer to agency data but use parcels as a geometry base. But with State Parks specifically we tend to defer to their boundaries over parcels."'' A reply from SCCGIS says ''"the answer depends on your mapping needs"'' and ''"there are a number of other factors potentially at play here as well. For instance, we've known for a long time that in certain areas of the county parcels can be off by up to 300'. This is acknowledged in the disclaimer we put on our internet mapping applications."'' The result is that park data near Little Basin west to about Last Chance Road seem more accurate as SCCGIS publish them, which are "winning" in OSM there, while west of there, along the San Mateo County boundary in and near WWCW, CPAD data seem to "better align" with multiple other data sources (and so remain in OSM, even as they differ from SCCGIS data). See also "County Boundary" (below), where some easterly drift (15 - 20 meters) is seen in SCCGIS County Boundary data near Big Basin Way compared to USGS topos and other sources. See also recent (2019-Q2) [https://wiki.openstreetmap.org/wiki/Talk:Tag:leisure%3Dpark Talk page] Discussion on {{tag|park:type}} tagging (being deprecated, but widely extant here). CPAD 2019b (November, 2019 data) began to be added to OSM, starting in Santa Cruz, Santa Clara and San Mateo counties in the early 2020s, continuing into Monterey County and beyond as of the mid-2020s (2024-Q1).
===Streams===
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