Blavet {transfR} | R Documentation |
Blavet French river dataset
Description
'Blavet' is a dataset of the Blavet French river in Brittany peninsula and two neighouring rivers (Claie and Coët-Organ). It contains all the necessary inputs to test the package and perform discharge prediction at the outlet of six catchments:
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J5613010 Evel at Guénin (316 km²)
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J5618310 Fremeur et Guénin (15.1 km²)
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J5618320 Fremeur et Pluméliau (5.88 km²)
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J5704810 Coët-Organ at Quistinic (47.7 km²)
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J8433020 Claie at Saint-Jean-Brévelay (135 km²)
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AgrHys Coët-Dan at Naizin (4.9 km²)
Hourly discharge observations of the six catchments are provided for one hydrological year, from 2013-10-01 to 2014-10-01. It has been extracted from the French HYDRO database (http://www.hydro.eaufrance.fr). Discharge observations for the Coët-Dan river is provided by the AgrHys Environment Research Observatories (Fovet et al. 2018) managed by INRAE (https://www6.inrae.fr/ore_agrhys_eng). Catchment delineations and respective maps of hydraulic length have been extracted from a digital elevation model of 100 m resolution.
Format
'Blavet' is a list of three objects:
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hl A list of stars objects containing the six rasters maps of hydraulic length.
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obs A stars object with two dimensions (time and space, with catchment delineations as spatial support) and one attribute (discharge observations).
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network A sf object of the [French TOPAGE river network](https://bdtopage.eaufrance.fr/). It can be downloaded using the Web Feature Service (WFS) "Sandre - Eau France", as shown in the example below.
Source
http://www.hydro.eaufrance.fr
https://www6.inrae.fr/ore_agrhys_eng
http://bdtopage.eaufrance.fr
References
Fovet O, Ruiz L, Gruau G, Akkal N, Aquilina L, Busnot S, Dupas R, Durand P, Faucheux M, Fauvel Y, Fléchard C, Gilliet N, Grimaldi C, Hamon Y, Jaffrezic A, Jeanneau L, Labasque T, Henaff GL, Mérot P, Molénat J, Petitjean P, Pierson-Wickmann A, Squividant H, Viaud V, Walter C, Gascuel-Odoux C (2018). “AgrHyS: An Observatory of Response Times in Agro-Hydro Systems.” Vadose Zone Journal, 17(1), 180066. doi:10.2136/vzj2018.04.0066.
Examples
## Not run:
# Working directory
wd <- tempdir(check = TRUE)
# Define a bbox that will encompass the catchments of the study area
blavet_bbox <- st_bbox(c(xmin = -3.3, xmax = -2.7, ymax = 48.11, ymin = 47.77),
crs = st_crs(4326))
# Download a French Topage river network within the bbox using the "Sandre - Eau France" WFS
download.file(url = paste0("https://services.sandre.eaufrance.fr/geo/topage2019",
"?request=GetFeature&service=WFS&version=2.0.0",
"&typeName=CoursEau_FXX_Topage2019",
"&outputFormat=application/json;
paste0(blavet_bbox[c("ymin","xmin","ymax","xmax")],
collapse=",")),
destfile = file.path(wd,"CoursEau_FXX_Topage2019.geojson"))
CoursEau_Topage2019 <- st_read(dsn = file.path(wd,"CoursEau_FXX_Topage2019.geojson"),
drivers = "GeoJSON", stringsAsFactors = FALSE, quiet = FALSE,
query = "SELECT gid FROM CoursEau_FXX_Topage2019")
## End(Not run)