Effective storage
902 10k m³
▲ +24 10k m³ (vs Yesterday)Real-time conditions and historical storage trends
Observed at: 09/18/2026 12:00Daily operation date: 09/17/2026 00:00
Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets
💡 Operational Notes & FAQ
阿公店水庫
💡 Why is Agongdian Reservoir nearly empty in summer? Is it a drought? Answer: Agongdian conducts mandatory "Empty-Reservoir Desilting" every wet season (June 1 – Sept 10). The reservoir is deliberately kept nearly empty so monsoon floods flush sediment into the ocean while providing flood retention storage. A low summer reading is 100% normal operation!
Storage ratioNormal Storage
60.9%
▲ +1.6% (vs Yesterday)▲ +0.3% (1 hr)
Effective storage: 902 10k m³ · Effective capacity: 1,480.1 10k m³
Real-time Hydraulic Briefing
Synthesized water storage and flow dynamicsCurrent water storage for 阿公店水庫 is at 60.9% with a water level elevation of 34.86 m. Storage is up 1.6% compared to yesterday at the same time (rising 0.3% in the past hour); inflow (14 m³/s) exceeds outflow (0 m³/s), resulting in net storage gain. Primary water supply covers Gangshan, Luzhu, and Alian districts in Northern Kaohsiung.
阿公店水庫 (ID: 30802) is an official Flood-control Reservoir situated in the Agongdian River System, operated and managed by Southern Region Water Resources Branch, WRA. In operation since 1953, this facility serves as a vital strategic pillar in Taiwan's regional water grid and flood mitigation network.
According to the latest observation, its effective water storage is approximately 902 (10k m³), with a storage ratio of 60.9% and a real-time water level elevation of 34.86 meters. Hydraulic flow metrics record an inflow of 14 m³/s against an outflow of 0 m³/s (net flow: +14.01 m³/s), indicating active reservoir refilling.
Primary functional purposes include Flood Mitigation, Municipal & Irrigation Water for Gangshan, Hydraulic Desilting, with key regional supply coverage extending across Gangshan, Luzhu, and Alian districts in Northern Kaohsiung.
Primary Supply Area:Gangshan, Luzhu, and Alian districts in Northern Kaohsiung
Flood MitigationMunicipal & Irrigation Water for GangshanHydraulic Desilting
Water level
34.86 m
▲ +0.1 m (vs Yesterday)Inflow
14.01 m³/s
▼ -0.5 m³/s (1 hr)Total outflow
0 m³/s
— 0.0 m³/s (1 hr)Effective capacity
1,480.1 10k m³
Net Flow Balance
阿公店水庫 · Real-time hydrological balance and storage dispatch analysis
Inflow (Qin)
14.01 m³/sUpstream catchment runoff inflow rateTotal outflow (Qout)
0 m³/sGate release and flood desilting rateNet Flow Balance (ΔQ)
+14.01 m³/sInflow exceeds outflow; storage volume is increasing24 小時水文吞吐平衡走勢
雙向對稱流量觀測（上方為上游入流，下方為大壩放流，穿梭折線為淨出入差額）Discharge Gates & Facilities
Real-time telemetry for spillways, drainage tunnels, desilting tunnels, and power outlets.
Spillway outflowMain spillway gate release or crest free overflow
24h 待命常閉
Power outletHydroelectric turbine power generation discharge
24h 待命常閉
Desilting tunnelBottom desilting and sediment bypass tunnel
24h 待命常閉
Drainage tunnelDedicated flood diversion tunnel release
24h 待命常閉
Water drawMunicipal water, industrial, or irrigation draw
0.59 m³/s
Other outflowEcological baseflow or auxiliary facility release
24h 待命常閉
Historical Storage Trends
View historical storage percentage and water volume trends over time.
Reservoir Specifications · Geographic Location
阿公店水庫 · Engineering profile and geospatial information
Managing AgencySouthern Region Water Resources Branch, WRA
Facility TypeFlood-control Reservoir
River SystemAgongdian River System
Effective capacity1,480.1 10k m³
Year Completed1953
Geographic Location
22.8028°N, 120.3556°E高雄市 · 燕巢區
Related Reservoirs in Region
Check real-time conditions and historical trends for other facilities in the same region.
Frequently Asked Questions
阿公店水庫 · Key insights into reservoir metrics, release mechanisms, and facility operations
FAQ
💡 Why is Agongdian Reservoir nearly empty in summer? Is it a drought? Answer: Agongdian conducts mandatory "Empty-Reservoir Desilting" every wet season (June 1 – Sept 10). The reservoir is deliberately kept nearly empty so monsoon floods flush sediment into the ocean while providing flood retention storage. A low summer reading is 100% normal operation!