Skonningsfoss Lock is a historical landmark located in Halden. This site is connected to the Tista, which is the main river in the Halden Watercourse. The Tista stretches less than 5 km from Femsjøen to Iddefjorden, and is an important part of the region's water system. The Halden Watercourse has a total length of 149.5 km, and the Tista catchment area covers an area of 1,584.24 km².
The average discharge at the mouth of the Tista is 22.34 m³/s, which contributes to the river's character and importance in the area. Historically, the Tista served as a border river between the municipalities of Berg and Idd. The river flows peacefully through the landscape, and Skonningsfoss Lock is an important point for understanding the historical and geographical significance of the Tista and the Halden Watercourse.