LOCAL HYDROLOGY VIEWER

HYDAT Screening Map

Interactive station map with circle-based screening, live analytics, and jump-off points into at-site and regional FFA.

Open Canada network explorer

Symbology

Short record

Medium record

Long record

Gold halo = real-time station

Circle size scales with log(gross drainage area). Fill color scales with years of record.

Filters

Minimum record end year Station number or name contains Province Minimum annual peak years (Q) Minimum gross drainage area (km²) Maximum gross drainage area (km²) Minimum total years of record Maximum total years of record Real-time stations only

Circle screening tool

Click anywhere on the map to place or recenter the screening circle. Drag the center handle or the radius handle.

Radius (km)

Visible map layer

Loading visible stations…

Circle analytics

Click the map to place the live screening circle.

No circle placed yet.

Nearest / matching stations

Place the circle to generate a ranked candidate list.

Selected station

Click a station point to inspect it.

Open station FFA deep dive Open regional FFA deep dive

Click anywhere on the map to place the live screening circle.