BOT 331 Final Exam Questions With Verified Answers

Which two of the following will decrease the stream flow from a watershed? A. Higher average annual precipitation B. Higher average annual temperature C. Denser and more extensive forest covering the watershed D. A larger watershed area E. Higher humidity F. Lower average wind speed - Answer (B and C) T/F: Logging increases water yield from a watershed. - Answer T (true) The USGS reports the following flow data for lower Plateau Creek for December 6 based on 74 years of record. 25th percentile 67 cfs median 91 cfs 75th 111 cfs Which of the following statements is true for this date in 75% of the years of record? A. Flow on this date is greater than 67 cfs for 25% of the years of record. B. Flow on this date is greater than 111 cfs for 75% of the years of record. C. Flow on this date is less than 91 cfs for 25% of the years of record. D. Flow on this date is less than 67 cfs for 25% of years of record. - Answer (D) (Flow on this date is less than 67 cfs for 25% of the years of record.)