Downloads complete station dataset including catchment descriptors and amax records. And saves it into a cache
    folder.

def download_data():
    """
    Downloads complete station dataset including catchment descriptors and amax records. And saves it into a cache
    folder.
    """
    with urlopen(_retrieve_download_url()) as f:
        with open(os.path.join(CACHE_FOLDER, CACHE_ZIP), "wb") as local_file:
            local_file.write(f.read())