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3 - Watershed metadata


A newer version of this resource https://doi.org/10.4211/hs.76ebc18852cc41e48d4ee83902bc0a7d is available that replaces this version.
An older version of this resource https://doi.org/10.4211/hs.37a7544cc3b944e88a8754bd6c1b8eb1 is available.
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Created: Dec 11, 2020 at 6:54 p.m.
Last updated: Dec 11, 2020 at 9:55 p.m.
DOI: 10.4211/hs.a3b06e4eafd1489699933a81226aafce
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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°

Content

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. (2020). 3 - Watershed metadata, HydroShare, https://doi.org/10.4211/hs.37a7544cc3b944e88a8754bd6c1b8eb1
This resource has been replaced by a newer version Leclerc, C. D. (2020). 3 - Watershed metadata, HydroShare, https://doi.org/10.4211/hs.76ebc18852cc41e48d4ee83902bc0a7d
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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, https://doi.org/10.4211/hs.a3b06e4eafd1489699933a81226aafce

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

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