2023-10-16 09:55:10 -05:00
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# load libraries
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library(tidyverse)
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library(nhdplusTools)
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library(sf)
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# load extent of map
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extent <- read.csv(file = "extent.csv")
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crs <- 26916
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extent_poly <- st_polygon(
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x = list(
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cbind(
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extent$longitude[c(1,2,2,1,1)],
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extent$latitude[c(1,1,2,2,1)])
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)
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)
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extent_poly <- st_sfc(extent_poly, crs=4326)
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extent <- list(longitude_max = max(extent$longitude),
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longitude_min = min(extent$longitude),
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latitude_max = max(extent$latitude),
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latitude_min = min(extent$latitude))
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# get watershed areas
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extent_huc <- get_huc(AOI = extent_poly, buffer = 0, type = "huc04")
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# download data
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download_nhdplushr("data", extent_huc$huc4, download_files = TRUE)
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