streamflow file generation - US stations with no data cause the script to stop

[mee067]

I had a list of US stations where some had no daily streamflow data, one had stage only, and a few had peak flows only - not daily means. The script should not stop on these. It could give a warning and generate -1s instead. It did that successfully for Canadian stations, even fictitious ones that did not exist at all.

Sometimes there are locally monitored stations that are not in HYDAT or USGS databases, sometimes there are interesting locations with no gauges.

[mee067]

same issue occurs if the time range is out of the stations time available. Here is the error if that's useful:
`IndexError Traceback (most recent call last)
in <cell line: 19>()
17
18 # Fetch hydrometric data and station metadata for US stations.
---> 19 combined_data_us, station_info_us = gen_flow.extract_flow_data_us(station_us, start_date, end_date)
20
21 # Combine the Canadian and US data based on the 'Date' column.

/usr/local/lib/python3.10/dist-packages/MESHpyPreProcessing/gen_streamflow_file.py in extract_flow_data_us(self, station_list, start_date, end_date)
31 data = response.json()
32 if 'timeSeries' in data['value']:
---> 33 time_series = data['value']['timeSeries'][0]
34 variable_info = time_series['variable']
35 unit = variable_info.get('unit', {}).get('unitCode', None)

IndexError: list index out of range`