Arroyo Monje flows through the south-central portion of Santa Fe province, draining a watershed of approximately 7,132 km² across the departments of San Martín, San Jerónimo, Belgrano, and Iriondo before emptying into the río Coronda at Balneario Monje. The stream crosses the Pampean plain, a gently rolling landscape characterized by flattened ridges alternating with low-lying depressions that hold lagoons and seasonally flooded areas. The basin has been significantly modified by roads, rural tracks, and drainage canals, all of which influence how water moves through the system.

One documented kayak route runs from a beach near the mouth upstream to a waterfall known as the Cascada del Arroyo Monje, a one-way distance of 4.5 km. Paddled at a relaxed pace with stops for photos and rest, the upstream leg takes approximately 1 hour and 20 minutes. The return downstream moves noticeably faster. Along this stretch, high banks (barrancas altas) expose distinct horizontal layers of soil, providing visual interest throughout the paddle. At the waterfall itself, there is a firm surface above the waterline where paddlers can disembark and rest. When water levels are normal, fish can be observed jumping at the cascade as they attempt to move upstream. The waterfall's appearance changes with water level: at lower stages it is less pronounced but more fully exposed.

At the mouth of the arroyo, Balneario Monje is a small settlement with cabins, camping areas, and rental houses, making it a practical base for paddling trips. The waters near the confluence with the río Coronda are calm and are used for water sports and fishing. Paddlers planning an afternoon trip to the waterfall should start early enough to allow for rest stops along the way.