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| Created: | Oct 15, 2020 at 4:30 p.m. | |
| Last updated: | 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
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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
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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 |
| This resource is referenced by | Lapides, D., Leclerc, C. D., Moidu, H., Dralle, D., & Hahm, W. J. (2020, August 14). Variability of headwater stream network extents controlled by flow regime and network hydraulic scaling. https://doi.org/10.31223/osf.io/mc6np |
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| The content of this resource is derived from | Hunsaker, C.: SSCZO – Streamflow / Discharge – KREW, Bull Creek – 2003-2010), https://doi.org/http://www.hydroshare.org/resource/d6d8b2a6e5604629b1192233646dfea1, updated 21 November 2019, 2019a. |
| The content of this resource is derived from | US Forest Service: Caspar Creek Experimental Watershed Study, SFC - Tributary South Fork (1963-1995) data, https://doi.org/https://www.fs.fed.us/psw/topics/water/caspar/data/map/sfc.shtml, updated 18 August 1998, 1998b. |
| The content of this resource is derived from | US Forest Service: Caspar Creek Experimental Watershed Study, NFC - Tributary North Fork (1963-1995) data, https://doi.org/https://www.fs.fed.us/psw/topics/water/caspar/data/map/nfc.shtml, updated 18 August 1998, 1998a. |
| The content of this resource is derived from | Miniat, C. F., Laseter, S. H., Swank, W. T., and Vose, J. M.: Daily streamflow data for watersheds at Coweeta Hydrologic Lab, North Carolina, https://doi.org/10.2737/RDS-2016-0025, updated 10 February 2020, 2016. |
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| The content of this resource is derived from | Hunsaker, C.: SSCZO – Streamflow / Discharge – Providence – (2003-2010), https://doi.org/https://www.hydroshare.org/resource/180f67282b4149ca8d4f41b2438257eb/, updated 21 November 2019, 2019b. |
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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, 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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