Effective storage
29.1 10k m³
▲ +0.2 10k m³ (1 hr)Real-time conditions and historical storage trends
Observed at: 09/18/2026 08:00Daily operation date: 09/17/2026 00:00
Source: Water Resources Agency Reservoir Conditions and Daily Reservoir Operations datasets
Storage ratioNormal Storage
92.6%
▲ +0.7% (1 hr)
Effective storage: 29.1 10k m³ · Effective capacity: 31.4 10k m³
Real-time Hydraulic Briefing
Synthesized water storage and flow dynamicsCurrent water storage for 后沃水庫 is at 92.6% with a water level elevation of 13.05 m. (rising 0.7% in the past hour) Primary water supply covers Beigan Township, Lienchiang County.
后沃水庫 (ID: 50310) is an official Off-stream Reservoir situated in the Hou’ao Creek, Beigan, Lienchiang County, operated and managed by Lienchiang County Water Plant. In operation since 2004, 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 29.1 (10k m³), with a storage ratio of 92.6% and a real-time water level elevation of 13.05 meters.
Primary functional purposes include Beigan (Matsu) Municipal Water Supply, Desalination Integration, with key regional supply coverage extending across Beigan Township, Lienchiang County.
Primary Supply Area:Beigan Township, Lienchiang County
Beigan (Matsu) Municipal Water SupplyDesalination Integration
Water level
13.05 m
▲ +0.05 m (1 hr)Inflow
N/A
Total outflow
0 m³/s
— 0.0 m³/s (1 hr)Effective capacity
31.4 10k m³
Net Flow Balance
后沃水庫 · Real-time hydrological balance and storage dispatch analysis
Inflow (Qin)
N/AUpstream catchment runoff inflow rateTotal outflow (Qout)
0 m³/sGate release and flood desilting rateNet Flow Balance (ΔQ)
N/AOfficial real-time inflow/outflow telemetry unavailable24 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
24h 待命常閉
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
后沃水庫 · Engineering profile and geospatial information
Managing AgencyLienchiang County Water Plant
Facility TypeOff-stream Reservoir
River SystemHou’ao Creek, Beigan, Lienchiang County
Effective capacity31.4 10k m³
Year Completed2004
Geographic Location
26.2239°N, 119.9989°E連江縣 · 北竿鄉
Related Reservoirs in Region
Check real-time conditions and historical trends for other facilities in the same region.
Frequently Asked Questions
后沃水庫 · Key insights into reservoir metrics, release mechanisms, and facility operations
FAQ
Total capacity is the total physical volume of the reservoir basin.
In contrast, effective storage refers to the usable volume available for public, agricultural, or power supply above dead storage and sediment levels.