Unclipped Steelhead Cohort Juvenile Migration Timing and Conditions Graph and Table

Migration Timing Characteristics
Juvenile Unclipped Steelhead at Red Bluff Diversion Dam, 1/1 - 12/31
Brood Year 2007 - 2021

Brood Year	Sampling Dates (MM/DD/YYYY)									Duration Middle 80% Days	Duration Middle 50% Days	Duration Middle 90% Days	Run Size	"Today" (08/17) %	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" (08/17) %	View Data (opens new window)
	Sampling Dates (MM/DD/YYYY)
2022 1 YTD	01/13/2022								07/27/2022				23,030 (YTD)		Graph w/Table
Average (2007 - 2021)	01/12	04/28	05/16	06/18	07/21	08/15	09/14	10/03	12/25	122	59	159	85,279	71.4%
Average 95% CI	01/02-01/21	04/02-05/23	04/24-06/06	05/29-07/07	07/04-08/06	08/01-08/28	08/27-10/01	09/17-10/18	12/21-12/28				31,060-139,498	62.9-79.8%
Median (2007 - 2021)	01/10	04/28	05/09	06/29	08/04	08/19	09/12	09/29	12/29	135	62	157	50,903	72%
Median 95% CI	01/03-01/13	04/11-05/31	04/27-06/25	05/18-07/24	06/23-08/15	08/05-09/05	08/23-09/28	09/07-10/19	12/20-12/31				22,961-129,981	56-89%
2021	01/06/2021	04/22/2021	04/29/2021	05/10/2021	05/20/2021	06/14/2021	08/03/2021	09/07/2021	12/28/2021	97	36	139	80,233	92.4%	Graph w/Table
2020	01/01/2020	07/03/2020	07/08/2020	07/21/2020	08/07/2020	08/20/2020	09/11/2020	09/28/2020	12/30/2020	66	31	88	50,903	71.6%	Graph w/Table
2019	01/12/2019	05/09/2019	05/15/2019	06/01/2019	08/04/2019	09/19/2019	12/17/2019	12/21/2019	12/28/2019	217	111	227	14,436	56.0%	Graph w/Table
2018	01/03/2018	04/11/2018	04/27/2018	05/18/2018	06/23/2018	08/19/2018	09/09/2018	09/27/2018	12/29/2018	136	94	170	25,681	74.1%	Graph w/Table
2017	03/09/2017	03/19/2017	04/28/2017	05/05/2017	07/29/2017	09/02/2017	10/03/2017	10/31/2017	12/31/2017	159	121	227	9,298	61.5%	Graph w/Table
2016	01/10/2016	01/11/2016	04/13/2016	07/07/2016	08/14/2016	09/06/2016	09/26/2016	10/18/2016	12/19/2016	167	62	282	22,961	51.9%	Graph w/Table
2015	01/23/2015	04/16/2015	04/19/2015	04/23/2015	05/23/2015	07/11/2015	09/20/2015	10/19/2015	12/29/2015	155	80	187	16,017	82.5%	Graph w/Table
2014	01/03/2014	02/28/2014	02/28/2014	05/18/2014	06/23/2014	07/29/2014	08/19/2014	09/05/2014	12/10/2014	173	73	190	47,549	89.3%	Graph w/Table
2013	01/11/2013	04/22/2013	05/04/2013	06/04/2013	07/15/2013	08/05/2013	08/23/2013	09/04/2013	12/31/2013	112	63	136	136,791	88.5%	Graph w/Table
2012	01/12/2012	05/27/2012	06/14/2012	07/26/2012	08/16/2012	08/29/2012	09/14/2012	10/02/2012	12/19/2012	93	35	129	129,981	52.4%	Graph w/Table
2011	01/01/2011	04/28/2011	05/09/2011	07/20/2011	08/19/2011	08/29/2011	09/21/2011	10/07/2011	12/30/2011	136	41	163	43,103	47.9%	Graph w/Table
2010	01/13/2010	05/07/2010	05/17/2010	07/03/2010	08/09/2010	09/05/2010	09/28/2010	10/10/2010	12/13/2010	135	65	157	75,571	64.8%	Graph w/Table
2009	01/12/2009	05/22/2009	06/25/2009	07/24/2009	08/12/2009	08/19/2009	08/28/2009	09/13/2009	12/25/2009	65	27	115	108,095	69.0%	Graph w/Table
2008	01/08/2008	05/30/2008	06/05/2008	06/28/2008	07/28/2008	08/13/2008	09/06/2008	09/25/2008	12/29/2008	94	47	119	116,252	78.8%	Graph w/Table
2007	01/08/2007	07/14/2007	08/02/2007	08/09/2007	08/09/2007	08/09/2007	08/19/2007	09/04/2007	12/31/2007	18	1	53	402,318	89.8%	Graph w/Table

Notes:

1. Brood Year 2022 is incomplete. Data presented in Migration Timing Characteristics table is data through today's date.
2. Data Courtesy of USFWS, Red Bluff
3. No sampling 3/25-6/30/2020.
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.