# shapefile in the data directory sfile = 'data/boundary' # output shapefile name damfile = '02060006dams' # path to place the NID shapefile NID = 'NID' # make an instance of the extractor to work with; the base US NID shapefile # will be downloaded and extracted automatically if it doesn't exist nidextractor = NIDExtractor(NID) # extract the data to a new shapefile nidextractor.extract_shapefile(sfile, damfile) # the extractor can also extract data to a new shapefile using a bounding box bbox = -78, 38, -75, 40 # output file name bboxfile = 'bbox' nidextractor.extract_bbox(bbox, bboxfile)
def main():
# make sure the metadata are set before starting the download
print('')
print(('preparing to delineate the subbasins for HUC {}\n'.format(HUC8)))
print(
('if you have already downloaded the NHDPlus, NWIS, and NID source ' +
'data make sure you set the directory paths, or all the data will ' +
'be downloaded again.\n'))
print('press "y" to continue or "n" to abort...\n')
s = 'n'
while s != 'y':
s = eval(input())
if s == 'n': exit()
# source data directory structure (ideally a data drive or server)
NHDPlus = '{}/NHDPlus'.format(source)
NWIS = '{}/NWIS'.format(source)
NID = '{}/NID'.format(source)
# download and extract the data using the PyHSPF data extractors (if needed)
# these steps can/will be skipped if they are not needed
nhdplusextractor = NHDPlusExtractor(HUC8[:2], NHDPlus)
nwisextractor = NWISExtractor(NWIS)
nidextractor = NIDExtractor(NID)
# extract or set the path to the source NHDPlus data
nhdplusextractor.download_data()
# extract the hydrography data for the HUC8 to the output directory
nhdplusextractor.extract_HUC8(HUC8, output)
# paths to the NHDPlus data files created above by the nhdplusextractor
bfile = '{}/boundary'.format(output) # watershed boundary
cfile = '{}/catchments'.format(output) # individual catchments
ffile = '{}/flowlines'.format(output) # individual flowlines
VAAs = '{}/flowlineVAAs'.format(output) # value-added attributes
efile = '{}/elevations'.format(output) # elevation geotiff
# extract the NWIS gages to a shapefile in the HUC8 directory
nwisextractor.extract_HUC8(HUC8, output)
# path to the gage shapefile created above
gfile = '{}/gagestations'.format(output, HUC8)
# extract the NID dams to a shapefile in the new HUC8 directory
dfile = '{}/dams'.format(output, HUC8)
nidextractor.extract_shapefile(bfile, dfile)
# use the locations of the gages and dams, the NHDPlus data files, and
# PyHSPF's HUC8Delineator to delineate subbasins subject to the criteria
# into a new file in the HUC8 output directory
delineator = HUC8Delineator(HUC8, VAAs, ffile, cfile, efile, gfile, dfile)
# delineate the watershed using the NHDPlus data and delineator
delineator.delineate(output, drainmax=drainmax, parallel=parallel)
# shapefile in the data directory sfile = 'data/boundary' # output shapefile name damfile = '02060006dams' # path to place the NID shapefile NID = 'NID' # make an instance of the extractor to work with; the base US NID shapefile # will be downloaded and extracted automatically if it doesn't exist nidextractor = NIDExtractor(NID) # extract the data to a new shapefile nidextractor.extract_shapefile(sfile, damfile) # the extractor can also extract data to a new shapefile using a bounding box bbox = -78, 38, -75, 40 # output file name bboxfile = 'bbox' nidextractor.extract_bbox(bbox, bboxfile)