International Boundary and Water Commission Transboundary Flow Reports
Please see Frequently Asked Questions for key terms and general information on Transboundary Flows.
2020 TRANSBOUNDARY FLOW REPORTS1
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
12/29/2019 |
01/09/2020 |
1,036,007,958 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2
|
01/13/2020 |
01/21/2020 |
435,803,450 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
01/24/2020 |
02/09/2020 |
826,993,241 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
02/13/2020 |
02/22/2020 |
433,831,602 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
02/25/2020 |
03/01/2020 |
147,746,364 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
03/01/2020 |
03/09/2020 |
503,241,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
03/15/2020 |
03/15/2020 |
20,196 |
Stewart's Drain |
Not Applicable (Occurred During Wet Weather |
Sudden Flow from Mexico |
Report Not Required for Wet Weather Transboundary Flows |
03/23/2020 |
03/27/2020 |
454,997,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
03/30/2020 |
04/06/2020 |
544,751,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
04/20/2020 |
Reported as "Ongoing" |
35,150,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
2019 TRANSBOUNDARY FLOW REPORTS1
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
01/01/2019 |
01/05/2019 |
38,800,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
01/18/2019 |
01/30/2019 |
610,000,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
02/08/2019 |
02/12/2019 |
313,500,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
02/24/2019 |
02/28/2019 |
390,200,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
02/28/2019 |
03/01/2019 |
89,200,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
03/05/2019 |
03/06/2019 |
93,600,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
03/11/2019 |
03/11/2019 |
152,300,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
03/19/2019 |
03/21/2019 |
123,000,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
03/26/2019 |
03/31/2019 |
83,300,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
04/06/2019 |
04/06/2019 |
500 |
Stewart's Drain |
A |
Sewage Backup in Mexico |
Available Upon Request2 |
04/10/2019 |
04/11/2019 |
2,000,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/11/2019 |
04/11/2019 |
30,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/12/2019 |
04/12/2019 |
19,800 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/17/2019 |
04/17/2019 |
27,800,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/17/2019 |
04/17/2019 |
1,500,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/19/2019 |
04/24/2019 |
5,348,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
04/25/2019 |
04/25/2019 |
3,800,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
05/03/2019 |
05/05/2019 |
4,186,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
05/10/2019 |
05/13/2019 |
56,700,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
05/16/2019 |
05/17/2019 |
9,750,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
06/01/2019 |
06/01/2019 |
80,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
06/08/2019 |
06/08/2019 |
99,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
06/18/2019 |
06/18/2019 |
109,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
06/19/2019 |
06/20/2019 |
1,870,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
Available Upon Request2 |
06/23/2019 |
06/24/2019 |
399,000 |
Tijuana River Main Channel |
B |
Rupture of Sewage Collector in Mexico |
Available Upon Request2 |
06/26/2019 |
06/28/2019 |
4,650,000 |
Tijuana River Main Channel |
B |
Rupture of Sewage Collector in Mexico |
Available Upon Request2 |
07/01/2019 |
07/01/2019 |
65,000 |
Tijuana River Main Channel |
B |
Rupture of Sewage Collector in Mexico |
Available Upon Request2 |
07/12/2019 |
07/12/2019 |
40,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
07/20/2019 |
07/21/2019 |
287,000 |
Tijuana River Main Channel |
B |
Electrical Malfunction at Pump Station CILA |
Available Upon Request2 |
08/11/2019 |
08/11/2019 |
125,000 |
Tijuana River Main Channel |
B |
Break in the Tijuana Aqueduct |
Available Upon Request2 |
09/04/2019 |
Reported as "Continues to Date" |
94,030,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
09/11/2019 |
09/12/2019 |
3,830,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
09/13/2019 |
09/16/2019 |
16,036,547 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
09/26/2019 |
Reported as "Continues to Date" |
926,621 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request2 |
09/29/2019 |
Reported as "Continues to Date" |
7,800.000 |
Tijuana River Main Channel |
B |
Break in Potable Water Line |
Available Upon Request2 |
10/12/2019 |
10/14/2019 |
14,497,873 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
Available Upon Request2 |
10/21/2019 |
10/22/2019 |
9,219,399 |
Tijuana River Main Channel |
B |
Break in La Presa-Aguaje la Tuna Aqueduct |
Available Upon Request2 |
11/18/2019 |
11/18/2019 |
3,739 |
Stewart's Drain |
A |
Sudden Flow from Mexico |
Available Upon Request2 |
12/02/2019 |
12/03/2019 |
104,490,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
12/11/2019 |
Reported as "Continues to Date" |
54,610,000 |
Tijuana River Main Channel |
B |
Rainfall in the Tijuana River Basin |
Available Upon Request2 |
1The information provided in the table is based on the currently available official transboundary flow reports. Additional transboundary flows for any period may be added to the table when the official transboundary flow reports become available.
2 Due to recent changes to State policy, the San Diego Water Board cannot post documents from outside organizations that are not compliant with the Americans with Disabilities Act (ADA). Please contact Mr. Keith Yaeger at Keith.Yaeger@waterboards.ca.gov to receive copies of the official transboundary flow reports.
2018 TRANSBOUNDARY FLOW REPORTS1
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
01/29/2018 |
01/29/2018 |
208,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
02/04/2018 |
02/04/2018 |
100,000 |
Tijuana River Main Channel |
B |
Rupture of Potable Water Line in Mexico |
|
02/09/2018 |
02/09/2018 |
561,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
02/10/2018 |
02/11/2018 |
664,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
02/20/2018 |
02/20/2018 |
304,000 |
Tijuana River Main Channel |
B |
Partial Shutdown of Pump Station CILA to Replace Electrical Equipment |
|
02/25/2018 |
02/26/2018 |
1,185,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
03/05/2018 |
03/06/2018 |
1,500,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
03/06/2018 |
03/07/2018 |
63,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Electrical Malfunction |
|
10/19/2018 |
10/19/2018 |
1,640,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
11/21/2018 |
11/21/2018 |
2,240,000 |
Tijuana River Main Channel |
B |
Removal of Berm at International Border |
|
11/25/2018 |
11/26/2018 |
7,900,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
12/11/2018 |
12/24/2018 |
147,600,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request1 |
12/28/2018 |
12/31/2018 |
47,900,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
Available Upon Request1 |
1Due to recent changes to State policy, the San Diego Water Board cannot post documents from outside the organization that are not compliant with the Americans with Disabilities Act (ADA). Please contact Mr. Keith Yaeger at Keith.Yaeger@waterboards.ca.gov to receive copies of the official transboundary flow reports.
2017 TRANSBOUNDARY FLOW REPORTS
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
02/06/2017 |
02/23/2017 |
143,000,000 |
Tijuana River Main Channel |
B |
Rehabilitation of Sewage Collector in Mexico Resulted in Bypass to Tijuana River |
|
03/01/2017 |
03/01/2017 |
145,000 |
Goat Canyon |
A |
Broken Pipe in Mexico |
|
04/24/2017 |
04/24/2017 |
143,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Power Failure |
|
04/24/2017 |
04/24/2017 |
12,850 |
Stewart's Drain |
A |
Sewage Backup in Mexico Collection System |
|
04/30/2017 |
05/01/2017 |
645,000 |
Goat Canyon |
A |
Broken Pipe in Mexico |
|
05/21/2017 |
05/21/2017 |
1,560 |
Stewart's Drain |
A |
Rupture of Sewage Line in Mexico |
|
05/21/2017 |
05/21/2017 |
400,000 |
Tijuana River Main Channel |
B |
Break in Force Main in Mexico Due to Auto Accident |
|
05/24/2017 |
05/24/2017 |
3,800 |
Stewart's Drain |
A |
Sewage Backup in Mexico Collection System |
|
05/25/2017 |
05/25/2017 |
335,000 |
Tijuana River Main Channel |
B |
Shutdown of Pump Station in Mexico |
|
06/09/2017 |
06/09/2017 |
42,800 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
06/10/2017 |
06/10/2017 |
161,670 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
06/12/2017 |
06/12/2017 |
66,600 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
06/20/2017 |
06/21/2017 |
100,000 |
Yogurt Canyon/ Border Field State Park |
B |
Clogged Manhole in Mexico |
|
06/27/2017 |
06/27/2017 |
5,500,000 |
Canyon del Sol |
A |
Broken Water Main in Mexico |
|
07/31/2017 |
07/31/2017 |
1,720,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Emergency Shutdown |
|
08/07/2017 |
08/07/2017 |
311,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
|
08/17/2017 |
08/17/2017 |
411,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged
| |
09/09/2017 |
09/10/2017 |
3,900,000 |
Tijuana River Main Channel |
B |
Overflow of Water Tanks in Mexico |
|
09/12/2017 |
09/13/2017 |
192,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Level Sensor Malfunction |
|
09/19/2017 |
09/19/2017 |
38,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
|
10/06/2017 |
10/07/2017 |
4,152,000 |
Canyon del Sol |
A |
Broken Water Main in Mexico
|
|
10/11/2017 |
10/11/2017 |
80,800 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
|
10/19/2017 |
10/19/2017 |
1,207,000 |
Canyon del Sol |
A |
Broken Water Main in Mexico |
|
10/22/2017 |
10/22/2017 |
228,000 |
Tijuana River Main Channel |
B |
Overflow of Water Storage Tank in Mexico |
|
12/11/2017 |
12/11/2017 |
223,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
2016 TRANSBOUNDARY FLOW REPORTS
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
01/16/2016 |
01/17/2016 |
6,620,000 |
Tijuana River Main Channel |
B |
Potable Water Line Break in Mexico |
|
01/17/2016 |
01/19/2016 |
8,450,000 |
Tijuana River Main Channel |
B |
Potable Water Line Break in Mexico |
|
01/19/2016 |
01/20/2016 |
2,080,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA
| |
01/20/2016 |
01/21/2016 |
2,090,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/21/2016 |
01/22/2016 |
1,600,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/23/2016 |
01/24/2016 |
2,170,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/23/2016 |
01/23/2016 |
720,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/24/2016 |
01/25/2016 |
1,440,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/25/2016 |
01/26/2016 |
940,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/26/2016 |
01/27/2016 |
480,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
01/28/2016 |
01/28/2016 |
2,238 |
Tijuana River Main Channel |
A |
Excess Flow from Mexico |
|
01/29/2016 |
01/29/2016 |
690,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
02/12/2016 |
02/13/2016 |
370,000 |
Tijuana River Main Channel |
B |
Flow Exceeded Capacity of Pump Station CILA |
|
04/05/2016 |
04/05/2016 |
4,860,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Power Failure |
|
06/30/2016 |
06/30/2016 |
440,000 |
Tijuana River Main Channel |
B |
Rupture of Potable Water Line in Mexico |
|
07/02/2016 |
07/02/2016 |
1,320,000 |
Tijuana River Main Channel |
B |
Damage to Pump Station CILA |
|
07/04/2016 |
07/04/2016 |
33,000 |
Tijuana River Main Channel |
B |
Damage to Pump Station CILA |
|
09/05/2016 |
09/05/2016 |
390 |
Canyon del Sol |
A |
Pump Station CILA Intake Screens Clogged with Trash |
|
09/08/2016 |
09/08/2016 |
690,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Power Failure |
|
10/26/2016 |
12/15/2016 |
920,000 |
Yogurt Canyon/ Border Field State Park |
B |
Collapsed Sewage Collector in Mexico |
|
11/29/2016 |
11/29/2016 |
200,000 |
Goat Canyon |
A |
Broken Potable Water Main in Mexico |
2015 TRANSBOUNDARY FLOW REPORT
Start Date |
End Date |
Volume (Gallons) |
Location |
Type (A or B) |
Reported Cause |
Link to Report |
|---|---|---|---|---|---|---|
02/12/2015 |
02/12/2015 |
53,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
|
02/14/2015 |
02/16/2015 |
172,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
|
06/17/2015 |
06/17/2015 |
47,600 |
Tijuana River Main Channel |
B |
Pump Station CILA Power Failure |
|
07/25/2015 |
07/27/2015 |
556,000 |
Tijuana River Main Channel |
B |
Manhole Backup in Mexico |
|
07/31/2015 |
08/01/2015 |
846,400 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
08/02/2015 |
08/02/2015 |
2,165,930 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
08/03/2015 |
08/03/2015 |
1,592,945 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
08/06/2015 |
08/06/2015 |
437,465 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
08/08/2015 |
08/09/2015 |
109,366 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged with Trash |
|
09/19/2015 |
09/22/2015 |
7,729,398 |
Tijuana River Main Channel |
B |
Pump Station CILA Breakdown |
|
10/13/2015 |
10/13/2015 |
1,350,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Loss of Pumping Capacity |
|
10/14/2015 |
10/14/2015 |
1,240,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Loss of Pumping Capacity |
|
10/17/2015 |
10/18/2015 |
1,300,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Loss of Pumping Capacity |
|
11/19/2015 |
11/19/2015 |
1,310,000 |
Tijuana River Main Channel |
B |
Broken Potable Water Main in Mexico |
|
12/11/2015 |
12/11/2015 |
2,060,000 |
Tijuana River Main Channel |
B |
Pump Station CILA Intake Screens Clogged |
