Watersheds of the northern Pacific coastal temperate rainforest margin

This dataset is a polygon representation of watersheds draining to the rainforest margin along the Pacific coast of North America. Watersheds are discrete spatial units of topography that organize the flow of water and materials from land to sea, as well as the movement of biota between marine and freshwaters. As such, watersheds are fundamental geographic units of analysis used by diverse disciplines of science and management. However, regional scale watershed analyses are often hampered by dataset resolution (global datasets are often too coarse) or spatial discontinuities (political borders often divide watersheds and represent a change in mapping methods). To reduce these issues and expedite regional watershed analyses, we developed a new integrated dataset of coastal watersheds for the Northern Pacific Coastal Temperate Rainforest (NPCTR) of North America. The dataset spans from Glacier Bay in Southeast Alaska to the Russian River watershed in Northern California, crossing two international borders. Dataset assembly was guided by three criteria. First, that the dataset should be a seamless representation of watersheds, at the finest possible resolution, without discontinuities or significant scale/method changes at jurisdictional boundaries. Second, that this goal would be achieved using existing watershed delineations provided by each jurisdiction - as opposed to deriving watershed outlines using hydrologic analysis of a digital elevation model, for example. This allows data users to draw on the standardized methods, detailed metadata, and extensive ancillary data available through the source datasets (e.g., corresponding fluvial networks and identifiers). Finally, that the entire land base should be represented, regardless of polygon (i.e., island) size or the resolution of source watershed delineation. This criterion allows, for example, calculations of total fluvial fluxes from land to sea. Given these criteria, the dataset was produced by integrating previously-existing national and provincial/state datasets, using the largest-scale delineation common among jurisdictions, and by retaining even the very smallest islets and undelineated drainage areas within the dataset. We use the term watershed to refer to the entire land area draining to the ocean at an identifiable outlet. Consequently, the dataset does not differentiate subcatchments associated with tributary rivers and streams. To our knowledge, this work constitutes the highest resolution watersheds dataset currently available for this region. The nominal mapping scale for delineated watersheds is equivalent to that of the 6th level (12-digit) hierarchical hydrologic units (HU) developed by the USGS in the United States. As a result of the nominal mapping scale of source datasets, watersheds smaller than ~20 km2 are not individually depicted in this dataset but are instead amalgamated into larger drainage units; this is largely the case for many coastal/frontal watersheds whose subcatchment delineations exist in other higher resolution mapping products available for BC and the Contiguous US, but not Alaska. This dataset was prepared for the Coastal Rainforest Margins Research Network (https://coastalmarginsnetwork.org/), an international collaboration of scientists studying the NPCTR at an eco-regional scale. For attribute definitions, methods, limitations, and recommendations, see the full metadata record at: https://drive.google.com/open?id=1MHNMIk1K9dASBPxNcFQJRBiX6BXG8Ek0 Suggested citation: Gonzalez Arriola, S., Giesbrecht, I.J.W., Biles, F.E., and D’Amore, D.V. 2018. Watersheds of the northern Pacific coastal temperate rainforest margin. Hakai Institute Data Package. Available at: https://hecate.hakai.org/geonetwork/srv/eng/catalog.search#/metadata/25674e9b-1d49-4270-b917-cfe6cdc30f95 DOI: 10.21966/1.715755.

Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Appropriate credit must be given to Hakai Institute the authors of the dataset, and the sources for original data used.

Data and Resources

Citation

Keywords

Dataset extent

Map data © OpenStreetMap contributors

Metadata Reference Date(s) March 29, 2022 (Publication)
March 29, 2022 (Revision)
Dataset Reference Date(s) October 12, 2018 (Publication)
Frequency of Update As Needed

Responsible Party 1
Name
Santiago Gonzalez Arriola
Affiliation
Hakai Institute
Role
  • Author
  • Distributor
  • Owner
  • Point of Contact
  • Processor
  • Publisher
Responsible Party 2
Name
Ian J. W. Giesbrecht
Affiliation
Hakai Institute
Email
ian.giesbrecht@hakai.org
Role
Author
Responsible Party 3
Name
F. E. Biles
Role
Author
Responsible Party 4
Name
D. V. D'Amore
Role
Author
Responsible Party 5
Name
Hakai Geospatial Technology Team
Affiliation
Hakai Institute
Email
data@hakai.org
Role
  • Custodian
  • Point of Contact
  • Processor
Responsible Party 6
Affiliation
Hakai Institute
Email
data@hakai.org
Role
Publisher

Field Value
Ocean Variables Other
Scope Dataset
Status On Going
Topic Category oceans
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Spatial Extent { "coordinates": [ [ [ -143.16578297, 37.67883738 ], [ -104.45881201, 37.67883738 ], [ -104.45881201, 60.91786918 ], [ -143.16578297, 60.91786918 ], [ -143.16578297, 37.67883738 ] ] ], "type": "Polygon" }
North Bounding Latitude 60.91786918
South Bounding Latitude 37.67883738
East Bounding Longitude -104.45881201
West Bounding Longitude -143.16578297
Vertical Extent
Min
0.0
Max
6000.0
Default Locale English
Citation identifier
Code
10.21966/1.715755