The 1980-2000 the monthly mean water temperature in °C

stream_temperature

Format

a 3 dimensional array [31 watersheds, 12 months, 21 years]

Source

  • HEC-5Q Model Output and Double Regression Temperature Modeling: Michael Wright mwright@usbr.gov

  • Data Wrangling and Additional Temperature Modeling: Sadie Gill sgill@flowwest.com

Details

The following four methods were used to estimate the monthly mean water temperature for the watersheds during 1979-1999:

HEC-5Q
Temperature assignments were determined by Mike Wright using the input files for the three HEC-5Q runs, i.e. AR_5QCS.dat and AR_5Q-CL.OUT.

Empirical Data
Only the Lower Sacramento had sufficient measured water temperature during the period of the CVPIA salmon life cycle model. The few missing values were imputed using forecast::na.interp.

Double Regression Modeling
Data from many temperature gauges was collected from several CVPIA watersheds. In these watersheds, a double regression technique was employed to predict water temperature based on equilibrium temperature and the river mile of interest. Equilibrium temperature is the temperature a pool of water would approach if left in contact with the air for an infinite time, generally equivalent to the air temperature. The results were applied to both watersheds of origin and as surrogate data for ungauged watersheds.

Modeling Details

Additional Temperature Modeling
For streams without major dams, water temperature is highly correlated with air temperature. For each watershed not included in the HEC-5Q model that had partial water temperature data, a linear model was fitted to estimate water temperature as a function of air temperature.

Generally, the air temperature record spans both the period of the CVPIA salmon life cycle model and the complete period of record of available water temperature data. In the cases where there were missing air temperature values between 1979-1999, we imputed the missing values using forecast::na.interp in order to have a complete air temperature dataset for water temperature estimation.

Air Temperature Data Source:

  • NOAA Climate Data Online (CDO) accessed using the rnoaa R package developed by rOpenSci.

Stream Water Temperature Data Sources:

Watershed Modeling Details

  • Upper Sacramento River HEC-5Q model output at COTTONWOOD CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Antelope Creek Regression method was fitted to data from in-river temperature gauges

  • Battle Creek HEC-5Q model output at BATTLE CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Bear Creek Regression method was fitted to data from in-river temperature gauges

  • Big Chico Creek Estimated mean monthly water temperature from a linear model fitted with water temperature data from CDEC Gage ID: BIC and air temperature data from NOAA CDO Station Id: USC00046685

  • Butte Creek Estimated mean monthly water temperature from a linear model fitted with water temperature data from CDEC Gage ID: BCD and air temperature data from NOAA CDO Station Id: USC00046685

  • Clear Creek HEC-5Q model output at IGO in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Cottonwood Creek HEC-5Q model output at COTTONWOOD CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Cow Creek HEC-5Q model output at COW CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Deer Creek Estimated mean monthly water temperature from a linear model fitted with water temperature data from USGS Gage ID: 11383500 and air temperature data from NOAA CDO Station Id: USC00041715

  • Elder Creek Regression method was fitted to data from Antelope River temperature gauges

  • Mill Creek Estimated mean monthly water temperature from a linear model fitted with water temperature data from USGS Gage ID: 11381500 and air temperature data from NOAA CDO Station Id: USW00024216

  • Paynes Creek Regression method was fitted to data from Antelope River temperature gauges

  • Stony Creek HEC-5Q model output at STONY CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Thomes Creek HEC-5Q model output at THOMES CR in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Upper-mid Sacramento River HEC-5Q model output at STONY CREEK in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Sutter Bypass Tisdale Rotary Screw Trap montly mean water temperature 2011-2017

  • Bear River Regression method was fitted to data from Deer Creek temperature gauges

  • Feather River Regression method was fitted to data from Deer Creek temperature gauges

  • Yuba River Estimated mean monthly water temperature from a linear model fitted with water temperature data from USGS Gage ID: 11421000 and air temperature data from NOAA CDO Station Id: USW00024216

  • Lower-mid Sacramento River HEC-5Q model output at KNIGHTS LDG in SSJB_SAC_Reference_062315/SAC/SAC_CL_TEMP.DSS

  • Yolo Bypass Knights Landing Rotary Screw Trap montly mean water temperature 2004-2018

  • American River HEC-5Q model output at WILLIAM POND PARK in SSJB_AR_Reference_063015/AR/AR_CL_Temp.dss

  • Lower Sacramento River Measured mean monthly water temperature from USGS Gage ID: 11447650 with imputed missing values using forecast::na.interp

  • Calaveras River Regression method was fitted to data from Deer Creek temperature gauges

  • Cosumnes River Estimated mean monthly water temperature from a linear model fitted with water temperature data from USGS Gage ID: 11335000 and air temperature data from NOAA CDO Station Id: USW00023271

  • Mokelumne River Estimated mean monthly water temperature from a linear model fitted with water temperature data provided by EBMUD measured near Victor, CA and air temperature data from NOAA CDO Station Id: USC00045032

  • Merced River HEC-5Q model output at SANTA FE BR in SSJB_SJR_Reference_062915/SJR/SJR_CL_TEMP.DSS

  • Stanislaus River HEC-5Q model output at BLW MCHENRY BR in SSJB_SJR_Reference_062915/SJR/SJR_CL_TEMP.DSS

  • Tuolumne River HEC-5Q model output at GEER ROAD BR in SSJB_SJR_Reference_062915/SJR/SJR_CL_TEMP.DSS

  • San Joaquin River HEC-5Q model output at ABV TUOL in SSJB_SJR_Reference_062915/SJR/SJR_CL_TEMP.DSS