Trinity River Mainstem Fishery Restoration Environmental Impact Statement/Report

Comments by Dr. Rodney J. Wittler, Hydraulic Engineer

Water Resources Research Laboratory

Technical Service Center

US Bureau of Reclamation

D-8560, POB 25007

Denver, CO 80225

Legend
S	Section
P	Paragraph
L	Line

Page	Existing	Recommended Change
1-2	S-1.1; P-8; L-3; approximately	roughly
1-2	S-1.1; P-8; L-3; 109 miles of spawning and rearing habitat was),	109 miles of spawning and rearing habitat), delete the extraneous "was"
1-8	S-1.4; P-3; L-2; northeasterly	northwesterly
1-8	S-1.5; P-1; L-2; 40 miles	110 miles
1-8	S-1.6.1 Heading orphan	Keep with next paragraph
1-9	S-1.6.1; P-1; L-last tunnels	tunnel there is only one tunnel from the Trinity basin to the Sacramento basin
1-9	S-1.6.2; P-1; maf	Need 1st time explanation of " maf " units
1-10	S-1.6.3; P-1; L-1; The SWP	The State Water Project ( SWP )
1-15	S-1.8; Bulleted list; 12th bullet; draw down	draw down remove bold-italic
1-15	S-1.9; P-1; The second sentence	The last half of the second sentence needs to be rewritten
2-1	S-2.1; P-2; L-4; because the flow schedule would not meet…	Because the flow schedule does not meet…
2-9	S-2.1.3.6; 1st bullet; a 1-foot-diameter penstock…	I am sure it is greater than one foot in diameter. Perhaps 11?
2-10	S-2.1.4; P-2; L-1; 47 restoration projects…	This reference changes throughout the EIS . How many projects are there?
2-10	S-2.1.4; P-2: L-3; "scaled-down"	I don't think the choice of "scaled down" is the best description. I propose the following:

"The goal of this alternative is for the forty miles between the North Fork and Lewiston to substitute for the 109 miles of unreachable river and habitat above Lewiston. This alternative creates an artificial temperature and flow regime optimized for all life cycles of the anadromous fish in the Trinity basin. This alternative begins with the construction of rearing habitat in the forty-mile reach with the removal of the berm and fossilizing riparian vegetation on and near the berms ."

I would check this wording with Stalnaker and others for accuracy and precision. – rjw
2-13	S-2.1.4.4; P-3; Spawning gravel volumes	Please check these volumes against what the flow evaluation recommendations
2-14	S-2.1.4.7; 2nd Column of table	Please check these volumes against what the flow evaluation recommendations