3 - Watershed metadata

A newer version of this resource http://www.hydroshare.org/resource/9a3b39efbef84a2788daa6559ce0cf02 is available that replaces this version.

An older version of this resource http://www.hydroshare.org/resource/f6ddba1906374a03b7c12028f01f77dc is available.

Authors:

Christine D Leclerc

Owners:

Christine D Leclerc

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Resource

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Oct 15, 2020 at 4:30 p.m.

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Oct 15, 2020 at 4:33 p.m.

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Abstract

Watershed metadata was collected for 14 watersheds from studies where channel length survey data was presented. For variables not found in the publications associated with the channel length surveys, additional sources are referenced. These sources are included in the notes column. Variables without sources were calculated, as described in the Additional Metadata section below. Examples of calculated values include, q_avg_mm_per_day, beta, and l_avg_km.

For Python packages, modules, and functions used to find calculated values, please see the associated GitHub repository: https://zenodo.org/record/4057320

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

North Latitude

51.8800°

East Longitude

8.7300°

South Latitude

35.0500°

West Longitude

-123.7300°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
beta	Scaling exponent for power function that characterizes the relationship between discharge and stream length, no units. Beta (β) is the scaling exponent in the power relation L = αQ^β. Discharge (Q) and drainage density (L) from at least three channel length surveys are fit to a power law model to obtain β.
cv_l	Coefficient of variation for length time series, no units as mean and standard deviation are in same units. Found by dividing standard deviation by the mean.
cv_q	Coefficient of variation for discharge time series is unitless as mean and standard deviation are in same units. Found by dividing standard deviation by the mean.
q_ url	Discharge time series URL
q_stop	Discharge time series stop date in YYYY-MM-DD format
beta_sd	Standard deviation for beta, no units. Calculated during parameter fitting of power law model.
q_start	Discharge time series start date in units of YYYY-MM-DD format
ws_name	Watershed name
ws_soil	Watershed soil
gauge_id	Gauge station ID, as available
bl_topquad	Was a 7.5’ topographic map found for this watershed? Y/N
gauge_name	Gauge station name
ws_bedrock	Watershed bedrock
ws_climate	Watershed climate per Köppen system. See code repository for Köppen climate classification tool used to find climate zones.
bl_l_per_km	Persistent channel network length in units of km. Georeferenced streamline segments measured in ArcMap.
bl_l_tot_km	Persistent and intermittent channel network length in units of km, as depicted by USGS 7.5' blueline maps. Georeferenced streamline segments were measured in ArcMap. Dashed lines for intermittent streams are measured only for the solid extent in ArcMap. To get the full length of intermittent stream in the maps, the gaps in a relatively straight 5.8 cm length of intermittent streamline was measured. Based on the ratio between segment length and extent of gaps, intermittent streamline lengths measured by ArcMap were multiplied by a factor of 1.34 to arrive at an estimate for the full length of intermittent stream segments.
l_sd_km_km2	Standard deviation for stream network length time series in units of km/km2. Calculated from inferred network extent timeseries.
ws_area_km2	Watershed area in units of km2
ws_name_sub	Sub-watershed identifier
ws_elev_avg_m	Watershed mean elevation in units of m
bl_topquad_url	URL for 7.5’ topographic map found for this watershed, as available
q_sd_mm_per_day	Standard deviation for discharge time series in units of mm/day.
alpha_units_vary	Scaling factor for power function that characterizes the relationship between discharge and stream length; Units vary as a function of the power law exponent β: (mm/day)^β/(km/km^2)
gauge_lat_decdeg	Gauge station latitude in units of decimal degrees
gauge_lon_decdeg	Gauge station longitude in units of decimal degrees
q_avg_mm_per_day	Average daily discharge in units of mm/day
alpha_sd_units_vary	Standard deviation for alpha; Units vary and can be (km/km^2)/(mm/day). Alpha (α) is the scaling factor in the power relation L = αQ^β. Discharge (Q) and drainage density (L) from at least three channel length surveys are fed into the model to obtain alpha.
bl_l_per_km_per_km2	Persistent channel network drainage density in units of km/km^2. Found by dividing wetted channel extent by watershed area.
bl_l_tot_km_per_km2	Persistent and intermittent channel network drainage density in units of km/km^2. Found by dividing wetted channel extent by watershed area.
ws_precip_mm_per_yr	Watershed annual average precipitation in units of mm/year
src_of_noncalculated_vals	Additional sources for metadata table values

Related Resources

This resource updates and replaces a previous version	Leclerc, C. D. (2022). 3 - Watershed metadata, HydroShare, http://www.hydroshare.org/resource/f6ddba1906374a03b7c12028f01f77dc
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This resource has been replaced by a newer version	Leclerc, C. D. (2020). 3 - Watershed metadata, HydroShare, http://www.hydroshare.org/resource/9a3b39efbef84a2788daa6559ce0cf02

Credits

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
Natural Sciences and Engineering Research Council of Canada	Undergraduate Student Research Award

How to Cite

Leclerc, C. D. (2020). 3 - Watershed metadata, HydroShare, http://www.hydroshare.org/resource/28202444ed644579bb78b86538245290

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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