Effective storage
11,150.1 10k m³
▲ +12.8 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
鯉魚潭水庫
When storage reaches 100%, water naturally overflows through the unique sawtooth spillway without gates.
Storage ratioNormal Storage
96.6%
▲ +0.1% (vs Yesterday)▼ -0% (1 hr)
Effective storage: 11,150.1 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 96.6% with a water level elevation of 299.07 m. Storage is up 0.1% compared to yesterday at the same time; outflow (2.3 m³/s) exceeds inflow (0 m³/s) during regulated release. 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 11,150.1 (10k m³), with a storage ratio of 96.6% and a real-time water level elevation of 299.07 meters. Hydraulic telemetry indicates an inflow of 0 m³/s and an outflow of 2.3 m³/s (net flow: -2.31 m³/s), actively conducting scheduled water supply and flood-control releases. 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
299.07 m
▲ +0.03 m (vs Yesterday)Inflow
0 m³/s
▼ -18.82 m³/s (1 hr)Total outflow
2.31 m³/s
— 0.0 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)
0 m³/sUpstream catchment runoff inflow rateTotal outflow (Qout)
2.31 m³/sGate release and flood desilting rateNet Flow Balance (ΔQ)
-2.31 m³/sOutflow exceeds inflow during regulated discharge24 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
2.31 m³/s
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
4.1 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
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.