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Reports and Studies

EMD has the following environmental reports and papers available for review. Click on any of the report titles below to view them in the available format. For faster viewing of larger files, right click on File Format icon or Title of Report below and select “Save Target As . . “ in Internet Explorer or “Save Link Target As . . “ in Netscape/Firefox and save to your hard drive first then view the file from the directory you saved to.

Environmental Assessments (EA)

Western Boundary

12/2016 - Environmental Assessment for Rehabilitation of the Levee System in the Tijuana River Flood Control Project [11 MB]

08/2001 - Final Environmental Assessment, Implement International Agreement for Deliveries to Tijuana, Baja California, of a part of Mexico's Colorado River Watrs through the Southern California Aqueducts [5 MB]

Rio Grande

07/2024 - Final Environmental Assessment and Finding of No Significant Impact: Management of Federal Grazing Leases at the Falcon Dam and Reservoir, Starr and Zapata Counties, Texas

10/2021 - Final Environmental Assessment Aquatic Habitat Restoration in the Rio Grande Canalization Project Sierra and Doña Ana Counties, New Mexico and El Paso County, Texas [14 MB]

08/2020 - Environmental Assessment and Finding of No Significant Impact: Arroyo Colorado at Harlingen Flood Flow Improvement Project Cameron County, Texas [7 MB]

12/2019 - RMP-Environmental Assessment and Finding of No Significant Impact: Environmental Assessment for the Continued Implementation of the River Management Plan for the Rio Grande Canalization [11 MB]

12/2017 - Final Environmental Assessment and Finding of No Significant Impact: Channel Maintenance Alternatives at Thurman I and II Arroyos in Hatch, NM, Rio Grande Canalization Project [23 MB]

05/2017 - Draft Environmental Assessment: Flood Control Improvements to the Rio Grande Canalization Project from Vinton to Canutillo, El Paso County, Texas (Canutillo Phase II) [2 MB]

01/2017 - Final Environmental Assessment and Finding of No Significant Impact for Alamito and Terneros Sediment and Vegetation Removal below Presidio Flood Control Project, Presidio, Texas [8 MB]

07/2014 - Final Supplemental Environmental Assessment: Flood Control Improvements to the Rio Grande Canalization Project in Vado, NM [3 MB]

07/2014 - Final Environmental Assessment: Allowing Avian Hunting in Designated Areas along the Rio Grande Canalization Project, Sierra and Doña Ana Counties, New Mexico [2 MB] (Appendices) [24 MB]

08/2012 - Final Environmental Assessment and Finding of No Significant Impact for Non-Native Plant Control and Re-Establishment of Riparian Habitats Along the Rio Grange [4 MB]

10/2011 - Final Supplemental Environmental Assessment Improvements to the Mission Protective Levee System, Hidalgo County, TX [16 MB]

11/2010 - Improvements to the Arroyo Colorado South Levee, Hidalgo and Cameron Counties, Texas [24 MB]

06/2009 - Final Environmental Assessment on the Improvements to the Arroyo Colorado North Levee Project [43 MB]

05/2009 - Final Environmental Assessment of Emergency Levee Repairs to the Presidio Flood Control Project, Station 7+00 [6 MB]

03/2009 - Final EA and FONSI for Improvements to the Rio Grande Rectification Project in El Paso and Hudspeth Counties, Texas [44 MB]

12/2007 - Final Environmental Assessment on Flood Control Improvements to the Rio Grande Canalization Project [1 MB]

11/2007 - Final Environmental Assessment on Improvements to the North and Main Floodways Levee Systems [14 MB]

09/2007 - Final Environmental Assessment on Improvements to the Donna-Brownsville Levee System [7 MB] (Appendices) [76 MB]

05/2007 - Final Environmental Assessment on the Rio Grande Rectification Project: Flood Control Improvements, Int'l Dam to Riverside Diversion Dam, El Paso County, TX [18 MB]

04/2007 - Draft Environmental Assessment and Finding of No Significant Impact: Rio Grande Rectification Project, Flood Control Improvements International to Riverside Dam [20 MB] Comments due May 12, 2007

02/2007 - Final Environmental Assessment (EA) Mission Levee dated February 26, 2007 [30 MB]

01/2007 - Draft Environmental Assessment: Flood Control Improvements Lateral A/Retamal Dike Levee System [10 MB]

09/2005 - Final Environmental Assessment Alternatives for Improved Flood Control of the Hidalgo Protective Levee System of 9/2005, prepared for the USIBWC by Parsons. [30 MB]

01/2004 - Environmental Assessment Finding of No Significant Impact for the Retamal Sediment Removal Project (EA/NOSI) [7 MB] | Appendix A [3 MB] | Appendix B [173 KB] | Appendix C [162 KB] | Appendix D [559 KB]

12/2001 - Final Environmental Assessment for “Replacement of the Old American Canal” Located in El Paso, Texas [49 MB]

Environmental Impact Statements (EIS)

Western Boundary

05/2008 - USIBWC Issues Record of Decision for Final EIS of SBIWTP Clean Water Act Compliance [151 KB]

07/2005 - USIBWC announces the Final Supplemental Environmental Impact Statement for Clean Water Act compliance at the South Bay International Wastewater Treatment Plant, San Diego County, California, prepared by Parsons [44 MB]

07/2005 - Final Supplemental Environmental Impact Statement for Clean Water Act Compliance at the South Bay International Waste Water Treatment Plant [41 MB]

07/2003 - Lower Colorado River Boundary and Capacity Preservation Project [7 KB]

Rio Grande

02/2010 - Environmental Impact Statement for Flood Control Improvements and Partial Levee Relocation USIBWC Presidio Flood Control Project [11 MB]

06/2009 - Record of Decision on River Management Alternatives for the Rio Grande Canalization Project [219 KB]

01/2008 - Final PEIS on Improvements to the USIBWC Rio Grande Flood Control Projects along the Texas-Mexico Border [55 MB]

09/2004 - Rio Grande Canalization Project Brief w/ EIS [17 KB] and the 5/2004 River Management Plan [41 MB] | Biological Assessment [7 MB] | Draft EIS [20 MB]

02/2004 - Lower Rio Grande Flood Control Record of Decision [861MB]

12/2003 - Environmental Impact Statement for Alternative Vegetation Maintenance Practices for the Lower Rio Grande Flood Control Project in Cameron, Hidalgo, and Willacy Counties, TX

04/2001 - El Paso - Las Cruces Regional Sustainable Water Project with EIS [18 KB]

Comment on EA's & EIS's

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Water Quality Reports

Western Boundary

08/2020 - Binational Water Quality Study of the Tijuana River and Adjacent Canyons and Drains [9.3 MB]

06/2018 - 2016 - 2017 Biennial Receiving Waters Monitorings and Assessment Report for the Point Loma and South Bay Ocean Outfalls [17 MB]

12/2016 - Binational Study of the Transboundary San Pedro Aquifer [36 MB]

12/2016 - Binational Study of the Transboundary San Pedro Aquifer (Spanish Version) [14 MB]

12/2014 - Spill and Transboundary Wastewater Flow Event Prevention and Response Plan [7 MB] (Spanish Version [7 MB])

04/2009 - Nogales International Wastewater Treatment Plant Maximum Allowable Headworks Loading Development [392 KB]

02/2009 - FINAL REPORT: Coastal Observations and Monitoring in South Bay San Diego IBWC/Surfrider Consent Decree [31 MB]

03/2003 - Binational Study Regarding the Presence of Toxic Substances in the Lower Colorado and New Rivers [2 MB]

01/2003 - Wastewater Characterization Study, City of Mexicali, Baja California, Mexico. The study was prepared by the City of San Diego Metropolitan Wastewater Department. [2 MB]

06/2002 - Tijuana, Baja California Mexico Report #8 [1 MB] and for the City of Tecate, Baja California Report #1 [602 KB] and Report #2 [1 MB].

08 /2001 - Binational Nogales Wash United States/Mexico Groundwater Monitoring Program Final Report [3 MB]

12/2000 - Tijuana Wastewater Characterization [43 MB]

11/2000 - Binational Study Regarding the Intensive Monitoring of the Rio Grande Waters in the Vicinity of Laredo, Texas and Nuevo Laredo, Tamaulipas Between the U.S. and Mexico [2 MB]

01/1997 - Construction of Immediate Need (“Quick Fix”) Projects in Mexicali, B.C., Mexico as Part of the Solution to the Sanitation of the New River, Executive Summary [9 MB]

Rio Grande

06/2004 - Third Phase of the Binational Study Regarding the Presence of Toxic Substances in the Upper Portion of the Rio Grande/Rio Bravo Between the U.S. and Mexico (Final Report) [8 MB]

04/1998 - Second Phase of the Binational Study Regarding the Presence of Toxic Substances in the Rio Grande/Rio Bravo and its Tributaries along the Boundary Portion between the United States and Mexico (Final Report, Vol I of II) English Version [13 MB]

04/1998 - Segunda Fase del Estudio Binacional Sobre la Presencia de Sustancias Tóxicas en el Río Bravo/Río Grande y sus Afluentes, en su Porción Fronteriza Entre México y Estados Unidos (Informe Final, Vol I of II) Versión en Español [362 KB]

09/1997 - Second Phase of the Binational Study Regarding the Presence of Toxic Substances in the Rio Grande/Rio Bravo and its Tributaries along the Boundary Portion between the United States and Mexico (Final Report, Vol II of II) English Version [7 MB]

09/1994 - Binational Study Regarding the Presence of Toxic Substances in the Rio Grande/Rio Bravo and its Tributaries along the Boundary Portion between the United States and Mexico (Final Report) [10 MB]

Canalization Record of Decision

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