Trap-efficiency study, Highland Creek flood retarding reservoir near Kelseyville, California, water years 1966-77

Abstract

Introduction Characteristics of the dr ainage bas in Desc ription of reservoir and dam 4 Method o f investigation 4 Runoff 4 Suspended sediment 5 Reservoir surveys 7 Results of investigation 10 Runoff data 10 Sediment d at a II Rese rvoir survey da ta I2 Com put a ti on of tra p efficiency 14 Summ ary 14 References cited 14 FIGURES I. Ind ex map 2 2. M a p hawing location and features of High land Creek Re ervoi r and drai nage basin 3 3-6. Photog raph hawing: 3. Highl a nd Creek Dam and outlet st ructure 4 4. Highl a nd Creek Re ervoir and principal outlet structure 4 5. Gagi ng sta ti o n on Hi ghla nd Creek above Highl a nd C ree k Da m 5 6. Outflow sa mpling site a t out let tunnel of Highla nd Creek Da m 6 7. Graph showi ng rel a tion between suspended-sediment disc ha rge a nd water discharge, Hi ghl a nd C reek above Highla nd Creek Dam , 1966-68 water years 7 TABL ES I. R ainfall , water di scharge, a nd suspended-sediment discha rge at Highla nd Creek above Highland Creek Dam gaging station 5 2. Water di scharge a nd tota l sediment discharge a t Highland Creek below Highland Creek Dam gaging station 5 3. Particle-size a nalyses fo r Highl and Creek above Highland Creek Dam 6 4. Particle-size a nal yses for Hig hl a nd C reek below Highland Creek Dam 8 5. Stage, area, a nd capacity da ta for December 1965 and April 1972 Highland Creek Reservoir surveys IO 6. Specific weight a nd particle-ize a nalyses of High land Creek Reservoi r bed sa mples II 7. Chemical a na lyses of Hi gh la nd C reek Reservo ir outfl ow 12 8. Summary of Highla nd C reek Reservoir sedimentatio n surveys I4

Reflections on writing hydrologic reports

“…The following example from the report "Trap Efficiency Study, Highland Creek Flood-Retarding Reservoir near Kelseyville, California, Water Years 1966-67" by Trujillo (1982), demonstrates this rela-tionship between purpose, summary, and abstract. The summary section also is an example of a succinct and quantitative concluding statement.…”

“…The abstract by Trujillo (1982) on page 24, presented as an example under ' The summary and conclusions" section, is well written and provides an example of an abstract. Note the correlation of key concepts in the abstract to the purpose and the summary.…”

A dam problem: simulated upstream impacts for a Searsville‐like watershed

“…It is important to acknowledge that the conceptdevelopment simulations reported herein could not be used to address every aspect of the modelling problem. Specifically, the effort reported here was neither Freeze (1971) Simulation of flow in earth dams US/DS C H Hammad (1972) River bed degradation DS C H/G Gregory and Park (1974) Channel capacity changes DS C H/G Baxter (1977) Environmental effects of dams US/DS C H/G/B/C Williams (1977) Channel sedimentation DS R H/G Graf (1980) Downstream rapids DS C H/G Parker (1980) Gravel-bed streams DS C H/G Beschta et al (1981) Sediment and controlled releases DS C H/G Trujillo (1982) Reservoir trap efficiency US C H/G Williams and Wolman (1984) Alluvial rivers DS C H/G Allen et al (1989) Bedrock fluvial systems DS C H/G Blodgett (1989) Channel hydraulics, incision US R H/G Simons and Simons (1991) Sediment problems US/DS R H/G Blanchard (1993) Groundwater fluctuations US/DS C H Gup (1994) Biological integrity US/DS C B Ligon et al (1995) Ecological effects, geomorphology DS C H/G/B Ziegler and Nisbet (1995) Modelling reservoir sediment US C H/G Power et al (1996) Biodiversity, food web impacts DS C H/G/B Watters (1996) Dams as barriers to aquatic fauna DS C B Collier et al (1997) Downstream dam impacts DS C H/G Nilsson et al (1997) Riverbank vegetation DS C H/B Hill et al (1998) Hydrologic modelling, vegetation US C H/B Graf (1999) Geographic census of dams US/DS C H/B Lenhart (2000) Impoundment hydrology, vegetation US R H/B Shields et al (2000) Channel migration DS C H/G Wohl and Cenderelli (2000) Reservoir sediment releases Bushaw-Newton et al (2002) Integrated ecological response US/DS R H/G/B Doyle et al (2002Doyle et al ( , 2003a Channel responses US/DS R H/G Pizzuto (2002) Fluvial geomorphology US/DS R H/G Poff and Hart (2002) Ecological classification of dams US/DS R H/G/B Nutrient retention in reservoirs U...…”