Unclipped Spring Chinook Cohort Juvenile Migration Timing and Conditions Graph and Table

Migration Timing Characteristics
Juvenile Unclipped Spring Chinook at Knights Landing RST, 10/1 - 9/30
Brood Year 2007 - 2020

Brood Year	Sampling Dates (MM/DD/YYYY)									Duration Middle 80% Days	Duration Middle 50% Days	Duration Middle 90% Days	Run Size	"Today" (08/09) %	View Data (opens new window)
	First	5%	10%	25%	50%	75%	90%	95%	Last
Brood Year	First	5%	10%	25%	50%	75%	90%	95%	Last	Duration Middle 80% Days	Duration Middle 50% Days	Duration Middle 90% Days	Run Size	"Today" (08/09) %	View Data (opens new window)
	Sampling Dates (MM/DD/YYYY)
2021 1 YTD	10/28/2021								05/01/2022				445 (YTD)		Graph w/Table
Average (2007 - 2020)	11/12	01/20	01/31	02/28	03/08	03/22	04/02	04/09	04/28	62	22	80	819	100.0%
Average 95% CI	10/23-12/01	12/28-02/12	01/04-02/26	02/01-03/26	02/11-04/01	02/28-04/12	03/11-04/23	03/19-04/29	04/05-05/20				549-1,090	100.0-100.0%
Median (2007 - 2020)	10/27	01/10	01/31	03/22	03/28	04/05	04/16	04/18	05/09	54	16	92	746	100%
Median 95% CI	10/24-12/09	12/15-03/18	12/20-03/24	01/10-04/02	02/27-04/10	03/23-04/15	04/09-04/17	04/14-04/23	05/04-05/16				435-1,459	100-100%
2020	10/26/2020	03/20/2021	03/24/2021	03/24/2021	03/27/2021	04/01/2021	04/14/2021	04/17/2021	05/04/2021	22	9	29	768	100.0%	Graph w/Table
2019	10/16/2019	12/11/2019	12/11/2019	03/31/2020	04/02/2020	04/02/2020	04/04/2020	04/05/2020	05/07/2020	117	3	118	1,459	100.0%	Graph w/Table
2018	12/04/2018	01/14/2019	03/24/2019	04/02/2019	04/11/2019	04/12/2019	04/17/2019	04/22/2019	05/23/2019	25	11	99	1,587	100.0%	Graph w/Table
2017	11/01/2017	03/18/2018	04/09/2018	04/10/2018	04/10/2018	04/11/2018	04/16/2018	04/24/2018	05/04/2018	8	2	38	297	100.0%	Graph w/Table
2016	10/22/2016	12/14/2016	12/19/2016	03/18/2017	03/30/2017	04/02/2017	04/09/2017	04/15/2017	05/10/2017	112	16	123	969	100.0%	Graph w/Table
2015	12/15/2015	12/27/2015	01/12/2016	03/27/2016	04/03/2016	04/13/2016	04/16/2016	04/17/2016	05/12/2016	96	18	114	911	100.0%	Graph w/Table
2014	10/24/2014	12/09/2014	12/09/2014	12/16/2014	12/22/2014	02/11/2015	02/19/2015	04/10/2015	05/06/2015	74	59	124	435	100.0%	Graph w/Table
2013	02/12/2014	03/02/2014	03/03/2014	03/03/2014	03/09/2014	03/23/2014	04/10/2014	04/14/2014	04/25/2014	39	21	44	1,512	100.0%	Graph w/Table
2012	11/08/2012	12/03/2012	12/04/2012	12/05/2012	12/06/2012	12/08/2012	12/09/2012	12/10/2012	12/14/2012	6	4	8	285	100.0%	Graph w/Table
2011	10/24/2011	03/18/2012	03/20/2012	03/31/2012	04/02/2012	04/14/2012	04/15/2012	04/19/2012	05/10/2012	27	15	33	723	100.0%	Graph w/Table
2010	12/09/2010	12/19/2010	12/21/2010	01/04/2011	02/27/2011	04/08/2011	04/21/2011	04/22/2011	05/02/2011	123	95	126	466	100.0%	Graph w/Table
2009	10/26/2009	01/26/2010	02/20/2010	04/15/2010	04/16/2010	04/16/2010	04/17/2010	04/19/2010	05/17/2010	57	2	84	1,220	100.0%	Graph w/Table
2008	10/27/2008	02/24/2009	02/26/2009	03/20/2009	03/25/2009	04/15/2009	04/17/2009	04/23/2009	05/12/2009	51	27	59	511	100.0%	Graph w/Table
2007	10/19/2007	01/07/2008	01/08/2008	01/10/2008	01/13/2008	02/07/2008	04/29/2008	04/29/2008	05/15/2008	113	29	114	326	100.0%	Graph w/Table

Notes:

1. Brood Year 2021 is incomplete. Data presented in Migration Timing Characteristics table is data through today's date.
2. Brood Year 2022 has not started. Data presented in Migration Timing Characteristics table is data through today's date.
3. Data Courtesy of CDFW via StreamNet and CDEC
4. Date Calculations:
   1. Query database for sampling/passage estimates for requested number of years, species, run, and location.
   2. Based on brood year assignment at Red Bluff, regroup calendar year based data into brood year based data for Chinook.
      • Winter, July-June
      • Spring, October-September
      • Fall, December-November
      • LateFall, April-March
   3. Based on query results, calculate total number of fish for each brood year (reported as "Run Size" in table).
   4. Based on query results, calculate cumulative number of fish by day in the year.
   5. Based on query results, calculate the Day of Year when fish passage % is equal to or greater than the target percent, e.g., 5% passage. Passage % for a day = cumulative number of fish for day / total fish in year.
   6. For each individual year target passage percent, first date, and last date results: convert Day of Year to Calendar Date for given year, taking into consideration leap year. Report calendar date in table.
   7. For each individual year middle run duration: 80% duration = 1 + (90% Day of Year - 10% Day of Year), 50% duration = 1 + (75% Day of Year - 25% Day of Year), 90% duration = 1 + (95% Day of Year - 5% Day of Year). Report days in table.
   8. For each target passage percent, first date, and last date: calculate average Day of Year for that passage target percent from each individual year Day of Year values. Convert result into integer. Treat integer as Day of Year and convert into Calendar Date for a non-leap year. Report as Average.
   9. For each target passage percent, first date, and last date: calculate median Day of Year for that passage target percent from individual Day of Year values. Convert median Day of Year into Calendar Date for a non-leap year. Report as Median.
   10. Individual year calendar date values reported in table honor leap year. Calculated calendar date values (Average and Median) treat results as non-leap year dates.