Short Lag Time

• A reason for the short lag time may be due to a high number of tributaries transporting water to the channel quickly.
• It may be a small drainage basin meaning less travel time to the main channel.
• The drainage basin may be steeply sloping leading to faster surface run-off.
• The area may have impermeable surfaces leading to surface run-off.
• The area may have sparse vegetation, leading to soil saturation and increased rates of surface run-off.