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GRCA monitoring network - Nith River
New: Look below the graph for a guide to
interpreting the numbers.
Caution: Data is provisional. For more information read our
Data Terms of Use
Download a copy of the brochure Preparing for Flooding: A Guide for Residents of New Hamburg
Interpreting the lines
The numbers on the left of the graph will change depending on the flows in the last
seven days. Here are some significant flow rates to help you interpret current
conditions.
- Learn how ice jams can cause sudden changes in the flow rates and lead to flooding.
| Gauge |
Flow (m3/s) |
|
Significance |
| Nithburg |
0.2 |
|
Normal summer low flow |
| |
75.0 |
|
Water at river banks, flooding in low-lying areas |
| Phillipsburg |
0.6 |
|
Normal summer low flow |
| |
108.0 |
|
Water at river banks, flooding in low-lying areas |
| New Hamburg |
1.5 |
|
Normal summer low flow |
| |
120.0 |
|
Water up to river banks |
| Learn more about |
142.0 |
|
Warning Level 1 - Water on fairgrounds |
| levels
here (PDF). |
175.0 |
|
Warning Level 2 |
| |
300.0 |
|
Warning Level 3 |
| |
500.0 |
|
Warning Level 4 |
| Ayr |
2.6 |
|
Normal summer low flow |
| |
110.0 |
|
Water at river banks, flooding in low-lying areas |
| |
142.0 |
|
Water on parking lots behind Northumberland
St. |
| |
226.0 |
|
Water
at rear
doors of Northumberland St. buildings |
| Canning |
2.9
|
|
Normal summer low flow |
| |
120 |
|
Water
at river banks, flooding in low-lying areas |
|
How to read this graph
This graph contains information on flows in the Nith River during the last
week at five gauge locations. The graph is automatically updated every hour.
Along the bottom (x axis) are the days the data was recorded. The vertical
line above the date represents midnight.
Along the left (y axis) is the river flow measured in cubic metres per second (m3/s).
That shows the amount of water passing by the gauge at that time. A cubic metre
is 1,000 litres of water so a flow of 10 m3/s would represent 10,000 litres of
water per second.
Please note: A number of factors will influence the accuracy of the
data including:
- backwater from ice, weeds or debris,
- malfunctioning equipment and/or routine maintenance of equipment may
cause data spikes, and
- sediment accumulation which may plug the gauge intake.
For more information read our
Data
Terms of Use
Location of Flow Gauges in the Nith River Watershed
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