"""7 DC-area USGS gauges within ~20 km of downtown.

Mix of urban (Anacostia, Rock Creek, Watts Branch), suburban (Difficult Run,
NW Anacostia), and the Potomac mainstem at Little Falls. Drainage areas span
3.6 mi² (Watts Branch) to 11,560 mi² (Potomac at Little Falls) — the CNN gets
a broad range of basin behaviors to learn from at this hourly cadence.

Dropped from earlier set: Potomac at Point of Rocks, Goose Creek, Catoctin
Creek — all >40 km out of the DC core.
"""

SITES = [
    {
        'id': '01646500', 'name': 'Potomac at Little Falls', 'short': 'Potomac DC',
        'lat': 38.9498, 'lon': -77.1276,
        'drainage_sqmi': 11560,
        'kind': 'mainstem',
        'notes': 'The headline DC-region gauge. Drains 11,500 sq mi.',
    },
    {
        'id': '01648000', 'name': 'Rock Creek at Sherrill Dr', 'short': 'Rock Creek',
        'lat': 38.9725, 'lon': -77.04,
        'drainage_sqmi': 62.2,
        'kind': 'urban',
        'notes': 'Rock Creek through NW DC — flashy urban watershed.',
    },
    {
        'id': '01651760', 'name': 'Anacostia at Kenilworth', 'short': 'Anacostia',
        'lat': 38.9092, 'lon': -76.9553,
        'drainage_sqmi': 134,
        'kind': 'urban',
        'notes': 'Anacostia mainstem at NE DC.',
    },
    {
        'id': '01649500', 'name': 'NE Branch Anacostia at Riverdale', 'short': 'NE Anacostia',
        'lat': 38.9603, 'lon': -76.926,
        'drainage_sqmi': 72.8,
        'kind': 'urban',
        'notes': 'Major Anacostia tributary, suburban PG County.',
    },
    {
        'id': '01650500', 'name': 'NW Branch Anacostia nr Colesville', 'short': 'NW Anacostia',
        'lat': 39.0655, 'lon': -77.0294,
        'drainage_sqmi': 21.1,
        'kind': 'urban',
        'notes': 'NW Branch Anacostia in MoCo.',
    },
    {
        'id': '01651800', 'name': 'Watts Branch at DC', 'short': 'Watts Branch',
        'lat': 38.9013, 'lon': -76.9433,
        'drainage_sqmi': 3.59,
        'kind': 'urban',
        'notes': 'Small urban tributary in SE DC — flash flood prone.',
    },
    {
        'id': '01646000', 'name': 'Difficult Run nr Great Falls', 'short': 'Difficult Run',
        'lat': 38.9759, 'lon': -77.2458,
        'drainage_sqmi': 57.9,
        'kind': 'suburban',
        'notes': 'NoVa suburban watershed, flashy on storms.',
    },
]

BY_ID = {s['id']: s for s in SITES}