FISHTIDE FIELD GUIDE
Sea, river and estuary: why one fishing timetable does not fit all
Different water environments need different data. Here is where the marine directory stops and why freshwater needs a separate approach.
Illustrative image, not an observation of a particular location or sea state.
There is no single water timetable
Tides, waves and wind help describe marine conditions alongside season, temperature and species behaviour. River flow, water level, temperature, clarity and dam operations can be particularly important inland. A shared lunar phase does not make those water movements equivalent. A coastal score should not be transferred to an inland city simply because a river passes through it.
Rivers need their own information
Check discharge measurements and units, gauge levels and timestamps, water temperature and any release or flood notices. Gauge level alone does not describe every local velocity. Bends, depth and obstructions affect flow. These measurements describe the environment; they are not a ready-made equation for catch numbers or a guaranteed bite time.
Estuaries are transitional
Tidal effects can extend inland from a river mouth. Water may be fresh or brackish depending on location and conditions, and salinity can vary with tide and discharge. Do not treat an estuary as an ordinary inland river, or use a distant marine station to infer every condition inside it. A useful assessment may require marine, river and local observations together.
Lakes are different again
A lake is not a miniature sea. Wind can generate waves, while temperature, oxygen and depth influence where fish may occur. Reservoir levels can respond to management and rainfall. A place name does not establish the right forecast model. Even a large enclosed water body should not automatically enter the marine-coast directory because its name contains the word sea.
FishTide coverage today
This release focuses on near-coast marine cities. It does not provide river or lake forecasts or replace missing freshwater coverage with a marine calculation. A future inland-water section needs appropriate observations, water-type classification, fishing-area references and review by people with freshwater experience. For now, use a city result as a geographic starting point and consult local sources for the water you intend to fish.