The San Lorenzo River is cleaner than you might think. Still, there are a number of challenges to a healthy San Lorenzo River, including pollution from bacteria, sediment and nutrients. You can keep your river clean by finding pollution and stopping it before it goes down your storm drain.

And, did you know that threatened and endangered species of fish in the San Lorenzo River rely on the same water that you do? The more water you use, the less there is for these critical species of fish. For example, steelhead trout are a threatened species that rely on the San Lorenzo River for spawning (breeding) and rearing. Studies show that the more water steelhead have for rearing, the better it is for the fish. When you conserve water, you leave more water in the San Lorenzo River for fish to thrive.

There are so many things you can do for a cleaner, healthier San Lorenzo River. Complete this activity to learn more!


  1. Download and print the worksheet.
  2. Read the list of things you can do to help the San Lorenzo River.
  3. Circle any actions that you commit to taking.
  4. Draw a picture of a healthy river.
  5. Draw yourself in the picture, taking action for a cleaner, healthier river.

Thank you to New Leaf Community Markets and artist Gill Seaman for your support in creating these activities for CWC’s Watershed Rangers Activity Book.

To all of the Watershed Rangers students, teachers and program partners, although we will not be able to see you in classrooms, field trips and after school programs right now, we hope to provide you and your loved ones with online resources and activities during this time. We know that parents, teacher and lifelong learners are seeking ways to stay engaged and active, and we’re going to be working to bring activities to you through the Coastal Watershed Council blog. Please share these resources and activities with friends, neighbors and parents groups and stay tuned for more.

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