CSM Study Guide 2026
Everything you need to pass the CSM exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CSM Exam Format at a Glance
📚 CSM Topics to Study (21)
✍️ Sample CSM Questions & Answers
1. What is residual risk?
Residual risk is what remains after mitigation measures are applied, and it must be accepted, further reduced, or transferred based on organizational risk tolerance.
2. What is a green roof and how does it contribute to urban stormwater management?
Green roofs consist of growing media and plants on a rooftop that absorb rainfall, significantly reducing runoff volume and attenuating peak flows from building rooftops in urban areas.
3. What is considered an illicit discharge?
An illicit discharge refers to any discharge to an MS4 that is not composed entirely of stormwater, except for discharges allowed under an NPDES permit or specifically exempted by regulation. Common illicit discharges include sanitary wastewater, car wash waste, oil, chemicals, and improper disposal of trash, all of which can severely pollute receiving waters.
4. When documenting an IDDE field investigation, which of the following is MOST important to record for potential enforcement action?
Thorough documentation including photos, GPS location, field measurements, timestamps, and inspector identification is essential for creating a defensible enforcement record and tracking investigation status.
5. Which material is most commonly used as a stabilized construction entrance to reduce tracking of mud onto public roads?
A stabilized construction entrance uses crushed stone or aggregate over geotextile fabric to knock mud off vehicle tires as they leave the site, preventing sediment tracking onto roads.
6. What is the most important principle in professional Certified Stormwater Manager practice?
Maintaining competence through continuous learning and adherence to professional standards ensures quality service delivery and public protection in Certified Stormwater Manager practice.