SCCD Summer Intern, Tim Stonier, holding a Global Positioning
unit for the Dubois Creek Assessment

By using a technique called "electro-fishing" scientists are able to temporarily stun fish long enough to identify the species, quantity, and size distribution present in the stream

Nets are used to collect specimens of macroinvertebrates for identification before they are released back into the water.  The presence of sensitive species can indicate optimal conditions for aquatic ecosystems requiring high quality water.

Aquatic macroinvertebrate organisms are essential
in the food web of a healthy stream.

Most Mayfly nymphs have three tales.  This one happens
to resemble it's two-tailed cousin, the Stonefly nymph.

Newly placed Driving Surface Aggregate (DSA) over an added cross pipe. DSA specifications are used for surface material to help ensure the road surface is highly compacted and resistant to erosion.  Previously non-existing cross pipes are added to help divide the volume and lower the velocity of surface runoff in order to lessen the force of erosion in ditches.