Effective storage
11,522.7 10k m³
▲ +4.3 10k m³ (vs Yesterday)Real-time conditions and historical storage trends
Observed at: 11/02/2026 06:00Daily operation date: 10/31/2026 00:00
Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets
💡 Operational Notes & FAQ
鯉魚潭水庫
When storage reaches 100%, water naturally overflows through the unique sawtooth spillway without gates.
Storage ratioNormal Storage
99.8%
▲ +0% (vs Yesterday)— 0.0% (1 hr)
Effective storage: 11,522.7 10k m³ · Effective capacity: 11,548.6 10k m³
Real-time Hydraulic Briefing
Synthesized water storage and flow dynamicsCurrent water storage for 鯉魚潭水庫 is at 99.8% with a water level elevation of 299.94 m. Storage is up 0% compared to yesterday at the same time; inflow (12.5 m³/s) exceeds outflow (2.2 m³/s), resulting in net storage gain. Primary water supply covers Miaoli County and Greater Taichung metropolitan area.
鯉魚潭水庫 (ID: 20101) is an official Off-stream Reservoir situated in the Jingshan Creek, Da’an River System, operated and managed by Central Region Water Resources Branch, WRA. In operation since 1992, 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 11,522.7 (10k m³), with a storage ratio of 99.8% and a real-time water level elevation of 299.94 meters. Hydraulic flow metrics record an inflow of 12.5 m³/s against an outflow of 2.2 m³/s (net flow: +10.34 m³/s), indicating active reservoir refilling. Operational flood-control status is currently designated as "-1".
Primary functional purposes include Greater Taichung & Miaoli Public Water, Hydropower, Irrigation & Flood Control, with key regional supply coverage extending across Miaoli County and Greater Taichung metropolitan area.
Primary Supply Area:Miaoli County and Greater Taichung metropolitan area
Greater Taichung & Miaoli Public WaterHydropowerIrrigation & Flood Control
Water level
299.94 m
▲ +0.01 m (vs Yesterday)Inflow
12.54 m³/s
▲ +0.1 m³/s (1 hr)Total outflow
2.2 m³/s
▲ +0.01 m³/s (1 hr)Effective capacity
11,548.6 10k m³
Net Flow Balance
鯉魚潭水庫 · Real-time hydrological balance and storage dispatch analysis
Inflow (Qin)
12.54 m³/sUpstream catchment runoff inflow rateTotal outflow (Qout)
2.2 m³/sGate release and flood desilting rateNet Flow Balance (ΔQ)
+10.34 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
10.28 m³/s
Other outflowEcological baseflow or auxiliary facility release
2.2 m³/s
Historical Storage Trends
View historical storage percentage and water volume trends over time.
Reservoir Specifications · Geographic Location
鯉魚潭水庫 · Engineering profile and geospatial information
Managing AgencyCentral Region Water Resources Branch, WRA
Facility TypeOff-stream Reservoir
River SystemJingshan Creek, Da’an River System
Effective capacity11,548.6 10k m³
Year Completed1992
Geographic Location
24.3547°N, 120.7761°E苗栗縣 · 三義鄉
Related Reservoirs in Region
Check real-time conditions and historical trends for other facilities in the same region.
Frequently Asked Questions
鯉魚潭水庫 · Key insights into reservoir metrics, release mechanisms, and facility operations
FAQ
When storage reaches 100%, water naturally overflows through the unique sawtooth spillway without gates.