Understand what a prediction describes before using it in the planning conversation.
Separate vertical and horizontal movement
Canadian Hydrographic Service tide tables describe predicted water levels and their times. Current tables describe predicted slack water and maximum current times and speeds. They are related products, but a high or low water time should not simply be assumed to give the slack-water time at another location. Start by identifying which quantity and station your source actually represents.
Keep the station and time context
Read the publication’s instructions and verify the reference location, date, time convention and any corrections required. Do not copy a convenient nearby value into a plan without understanding its applicability. Navigation and passage planning require suitable training and appropriate current information. A fishing article can help explain terminology, but cannot calculate a safe transit or clearance for a particular vessel and route.
Use predictions as one input
Observed conditions can differ from predictions, and the suitability of an outing involves more than a single table entry. Discuss the full route and changing conditions with a competent person. Keep the original source and context attached to any note you share. A cropped number with no station or time label is easy to misunderstand, particularly when several people use different apps.
Your practical checklist
- Identify tide height or tidal current.
- Check station, date and time conventions.
- Read the publication’s instructions.
- Use competent route-specific assessment.
The next useful decision
If the product or location is unclear, clarify it before using the number. Similar-looking charts can describe different quantities.
Sources & further reading
Primary references for the principles and context discussed here. Use current official guidance and appropriate local assessment for your actual outing.
Published 30 October 2026 · Archers Fishing Editorial. Prepared with AI assistance. Examples are hypothetical. Read our editorial policy or report a correction.