han-river-water-level

Query current Han River water level and flow rate by station name (`stationName`, e.g. 한강대교, 잠수교) or station code (`stationCode`) through `k-skill-proxy.nomadamas.org/v1/han-river/water-level`, backed by the 한강홍수통제소 (HRFCO) Open API. The proxy holds the ServiceKey, returns ambiguous-name candidate lists when input is too broad, and surfaces only the station, timestamp, water level, flow rate, and active alert thresholds.