Lower Calaveras River Water Temperature Study Tara Dougherty Camilla Saviz School of Engineering & Computer Science University of the Pacific Stockton, CA 1
Outline • Objectives • Field equipment and sites • Preliminary results University of the Pacific, Stockton, CA 2
Objectives • Develop and implement a temperature monitoring study for the lower Calaveras River • Analyze longitudinal temperature variation – From New Hogan to ~West Lane • Involve an undergraduate student in research University of the Pacific, Stockton, CA 3
Field Equipment • Onset HOBO Water Temp Pro loggers – Water temperature measured every 5 mins – Continuously logs and stores data for up to 75 days – Deployed using rebar with PVC protective casing • Marsh-McBirney velocity meter • Garmin eTrex GPS unit University of the Pacific, Stockton, CA 4
Field Study Area Maps from www.calaverasriver.com University of the Pacific, Stockton, CA 5
Field Study Sites New Hogan Reservoir HWY 99 I-5 New Old Calaveras Hogan Calaveras West River (RM 44) River Lane Bellota RR Bridge Jenny (RM 5) Lind Shelton Rd. (RM 37) (RM 31) Escalon- Bellota Rd. (RM 22) San Joaquin River Mormon Mormon HWY 4 Slough at Slough Milton Rd. (RM 18) University of the Pacific, Stockton, CA 6
Longitudinal Temperature Profiles Calaveras River - Longitudinal Temperature Water Temperature (deg F) . 85 NHG 80 Jenny Lind 75 70 Shelton Rd 65 Bellota 60 Morm. Sl. @ 55 Milton 50 07/02/05 07/06/05 07/11/05 07/15/05 07/20/05 07/24/05 07/28/05 08/02/05 08/06/05 08/10/05 08/15/05 08/19/05 08/24/05 08/28/05 09/01/05 09/06/05 09/10/05 University of the Pacific, Stockton, CA 7
Comparison of Measured Temperatures Calaveras River at Shelton Road (UOP) 65 perature (deg F) 63 61 ater Tem 59 57 W 55 07/02/05 07/05/05 07/09/05 07/12/05 07/16/05 07/19/05 07/22/05 07/26/05 07/29/05 08/02/05 08/05/05 08/08/05 08/12/05 08/15/05 08/19/05 08/22/05 08/25/05 08/29/05 09/01/05 09/05/05 09/08/05 Calaveras River at Shelton Road (SPC) 65 ) F eg re (d 63 eratu 61 p em 59 ater T 57 W 55 7/02/05 7/19/05 8/5/05 8/22/05 9/8/05 University of the Pacific, Stockton, CA 8
Comparison of Measured Temperatures Calaveras River at New Hogan (UOP) ) perature (deg F 55 54 53 52 em ater T 51 W 50 06/30/05 07/04/05 07/08/05 07/12/05 07/16/05 07/21/05 07/25/05 07/29/05 08/02/05 08/06/05 08/11/05 08/15/05 08/19/05 08/23/05 08/27/05 09/01/05 09/05/05 09/09/05 Calaveras River at New Hogan (SPC) 55 ) F eg 54 re (d eratu 53 p em 52 ater T 51 W 50 University of the Pacific, Stockton, CA 6/28/05 7/16/05 8/3/05 8/21/05 9/8/05 9
Longitudinal Temperature Profiles Calaveras River - Longitudinal Temperature Water Temperature (deg F) 85 NHG 80 Jenny Lind 75 70 Shelton Rd 65 Bellota 60 Morm. Sl. @ 55 Milton 50 07/02/05 07/06/05 07/11/05 07/15/05 07/20/05 07/24/05 07/28/05 08/02/05 08/06/05 08/10/05 08/15/05 08/19/05 08/24/05 08/28/05 09/01/05 09/06/05 09/10/05 Site RM Average Temp (°F) NHG 44 53.5 Jenny Lind 37 58.6 Shelton Rd 31 60.6 Bellota 22 68.9 Mormon Sl. @ Milton 18 78.0 University of the Pacific, Stockton, CA 10
Longitudinal Temperature Profiles Calaveras River Temperatures, July 2-6, 2005 75 Water Temperature (deg (F) 70 NHG 65 Jenny Lind 60 Shelton Rd 55 Bellota 50 7/2/05 7/3/05 7/4/05 7/5/05 7/6/05 Noon Noon Noon Noon Noon Maximum ∆ T (°F) Site RM NHG 44 1.3-1.4 Jenny Lind 37 5.2-6.0 Shelton Rd 31 5.1-5.8 Bellota 22 2.9-3.2 University of the Pacific, Stockton, CA 11
Future Work • Measure temperatures at intermediate (more) sites • Develop a preliminary temperature model for the Calaveras River to examine flow rate-temperature relationships University of the Pacific, Stockton, CA 12
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