This function takes information of where and when a set of environmental samples were
collected and retrieves daily river discharge data from the nearest river (\(m^3/s\)) for those locations and times. Data come from
the Open-Meteo Global Flood API (https://open-meteo.com/en/docs/flood-api)
via the openmeteo R package.
     
    
    Usage
    get_river_discharge_data(lon, lat, dates)
 
    
    Arguments
    - lon
- A numeric vector giving the longitude of the sampling sites in Decimal Degrees. 
- lat
- A numeric vector giving the latitude of the sampling sites in Decimal Degrees. 
- dates
- A character or date vector of dates giving the date when each sample was
collected (format is YYYY-MM-DD) 
 
    
    
    Examples
    if (FALSE) {
tmp <- get_river_discharge_data(lon = c(-54.9857, -52.9857),
                                lat = c(-10.9094, -25.8756),
                                dates = c("2020-06-01", "2020-10-31"))
head(tmp)
}