Reports

Floodplain Studies

Note: On-going Floodplain mapping and basin management plan projects can be found on the Projects page.

Special Studies Floodplain Reports

• Special Study 00 - Miscellaneous Floodplain Mapping
• Floodplain Study FP-001-1972 - Drainage Report for Arivaca Area Plan, Blanton & Co. 3/21/1972.
• Floodplain Study FP-002-2017 - Ruthrauff Basin Management Plan Technical Data Notebook, JE Fuller Hydrology & Geomorphology Inc., 11/2/2015.
• Floodplain Study FP-003-1986 - Flecha Caida Flood Improvement Study, Simons, Li & Associates, 1/28/1986.
• Floodplain Study FP-004-1986 - Tucson Mountain Basin Study, Camp Dresser & McKee, Inc., March 15, 1986.
• Floodplain Study FP-005-1986 - Highlands Wash Basin Management Plan Report, A-N West, Inc., July 15, 1986 and Phase III Final Report, Camp Dresser & McKee, Inc., 1/25/1990.
• Floodplain Study FP-006-1987 - Riverside Terrace Basin Management Plan, Dooley-Jones & Associates, 3/13/1987.
• Floodplain Study FP-007-1988 - Ventana Canyon Estates, Erosion Setback Limits, Osborn, Petterson, Walbert and Associates, 2/4/1988.
• Floodplain Study FP-008-1988 - Millstone Manor No. 6, PCDOT&FCD, 6/20/1988.
• Floodplain Study FP-009-1988 - Sutherland Wash, H&H Report, PC DOT&FCD, 8/9/1988.
• Lee Moore Wash Basin Management Study. The Lee Moore Basin Management Study was recently divided into two study areas with Houghton Road as the dividing line between the two. The 2009 study established flow corridors that were agreed upon by multiple agencies and may be applicable for development projects. The latest studies should be used for single-lot permitting.
  • Floodplain Study FP-010-2019 Revision - West Floodplain Mapping Project, PCFCD & JE Fuller, 02/28/2019
  • Floodplain Study FP-010-2018 Revision - Revised Lee Moore Wash Basin Management, Upstream of South Houghton Road, PCFCD, 8/14/2018
  • Floodplain Study FP-010-2009 - Lee Moore Wash Basin Management Study, Stantec, September 2009. Lee Moore Wash Basin Management Study FLO-2D Map: Predicted Flood Inundation Flow Depths   
  • (NOTE: This Floodplain Studies above replace the previous Special Study 10 - Lee Moore Wash Watershed, PC DOT&FCD, 12/29/1988).
• Floodplain Study FP-011-1989 - Green Valley Drainageway No.9, CMG Drainage Engineering Inc., 1/12/1989.
• Floodplain Study FP-012-1989 - Valley View Wash, Flecha Caida Flood Phase 2, Simons, Li & Associates, Inc., 2/15/1989.
• Floodplain Study FP-013-1991- Holladay Street & Forrest Avenue Watershed Study, McGovern, MacVittie Lodge & Dean, Inc., 1/22/90 and Drainage Relief Assessment for the Drexel/Westover Intersection, CMG Drainage Engineering, Inc., 11/25/1991.
• Floodplain Study FP-014-1990 - Southwest Basin Management Study, Anderson, Passarelli & Associates, 11/27/1990.
• Floodplain Study FP-015-1990 - Black Wash Drainage Analysis, Administrative Floodway, 7/00/1990.
• Floodplain Study FP-016-2006 - [Upper] Canada Del Oro Wash Letter of Map Revision Study, David Evans and Associates, 10/28/2004.
• Floodplain Study FP-017-1992 - Fortyniner's Interior Drainage Improvements, PC DOT&FCD, January 1992
• Floodplain Study FP-018-2009 - Soldier Wash and its Tributary, RFCD, 6/10/2010. (Webmaster's note: Please note that erroneous versions of Exhibits 1.1 and 1.2 were accidentally linked here. If you downloaded Exhibits 1.1 or 1.2 previously, please ensure that you have the correct version of these exhibits.) Exhibit 1.1, Exhibit 1.2, Exhibit 3.1, Exhibit 3.2(Note: This study replaces two previous Special Studies for Soldier Wash, one study by Arroyo Engineering and one study by RGA Engineering, and also replaces a previous Special Study #33 for Milagrosa Hills Wash)
• Floodplain and Erosion Study ES-019-1992 - Tortolita Mountains Geomorphic Assessment, Arizona Geological Survey, June 1992
• Floodplain Study FP-020-1992 - Valencia Wash Basin Management Study, Alpha Engineering, 3/8/1993.
• Floodplain Study FP-021-1992 - Upper Carmack, South Branch, Sub-Basin Management Study (Phase 1 Report only), [Phase 1 Appendices]  [Phase 2 Report]  [Phase 2 Appendices],  Robert L. Shand, P.E., Drainage & Flood-Control Engineering, 7/24/1992.
• Floodplain Study FP-022-1992 - 27 Mile Wash Flood Plain Delineation Study, Collins-Pina Consulting Engineers Inc., August 1992
• Erosion Study ES-023-1993 - Tanque Verde Creek Management Study, Johnson-Brittain & Associates, July 30, 1993.
• Floodplain Study FP-024-1993 - Tortolita Area Basin Management Plan, Ph I, Ph IIB, Cella Barr Associates, 8/3/1993.
• Floodplain Study FP-025-1993 - Mt. Lemmon Culvert Study, CMG, Drainage Engineering, Inc., 11/19/1993, and Final Drainage Report for Summerhaven Village Center, CMG Drainage Engineering, Inc., 9/13/2005.
• Floodplain Study FP-026-1994 - Southwest Basin Management Study Ph. II Part A, Volume 1 and Volume 2 Cella Barr Associates, 4/29/1994.
• Floodplain Study FP-027-1986 - New Tucson, Units 21, 22, 23, 24 & 27, Erosion-Hazard Setback Analysis for Unit 23, Martin-McItosh, 1/23/95. Hydrologic and Hydraulic Report for Units 22, 23 and 24, DJA Job No. 84-077.01. Hydrology Report, New Tucson, Unit 27, Environmental Engineering Consultants, 9/5/1996.
• Floodplain Study FP-028-1994 - Hydrology/Hydraulics Report for Demetrie Wash, McGovern, MacVittie, Lodge & Associates, Inc., 10/13/1994.
• Floodplain Study FP-029-1987 - San Joaquin Estates Floodplain Status Hydrology Report for San Joaquin Estates - Improvement Plans Lots 268 thru 290, Trimble Engineering, Inc., 3/22/1987 and Drainage Reports for Phases III-A, IV and V of San Joaquin Estates, CMG Drainage Engineering, Inc., 5/31/1989.
• Floodplain Study FP-030-1994 - Hydrologic/Hydraulic Report for Palo Verde Ranch, ICON Consultants USA, Inc., 7/1/1994.
• Floodplain Study FP-031-1996 - Brawley Wash Floodplain Study, Simons, Li & Associates, Inc., 9/6/1996.
• Floodplain Study FP-032-1996 - New Tucson Units 26, 28, 29 & 30, ICON Consultants USA, Inc., 9/9/1996 and Addendum I, ICON, 3/29/2006 and Addendum II, ICON, 5/15/2006.
• (Note: The previous Special Study #33 for Milagrosa Hills Wash has been superceded by Special Study #18, above.)
• Floodplain Study FP-034-1995 - 49ers Country Club Lots 315 to 324, McGovern, MacVittie, Lodge & Associates, Inc., 8/15/1995.
• Floodplain Study FP-035-1999 - Earp Wash, DJA Engineering Corp., 3/4/1999.
• Floodplain Study FP-036-2008 - Camino Real Wash Letter of Map Revision, Castro Engineering an JE Fuller Hydrology & Geomorphology, Inc., 7/14/2008.
• Floodplain Study FP-037-1999 - Camino de Oeste Wash, Arroyo Engineering, Inc., January 1999.
• Floodplain Study FP-038-1999 - Sahuarita Basin Management Study, CMG Drainage Engineering Inc., 1/5/2000.
• Floodplain Study FP-039-2016 - Two-dimensional Hydraulic Modeling Study Report for Finger Rock Wash Lower Floodplain, CMG Drainage Engineering, Inc., 6/29/2016. This study replaces HEC-1 and FLO 2-D Models for Finger Rock Wash, CMG Drainage Engineering Inc., 10/6/00 and Lower Finger Rock Wash, CMG Drainage Engineering Inc., Revised 2/28/1994.
• Floodplain Study FP-040-2000 - Mission Wash Study for FEMA, McGovern, MacVittie, Lodge & Associates, 7/24/2000.
• Floodplain Study FP-041-2000 - Chaparral Heights -- annexed by Oro Valley.
• Floodplain Study FP-042-1999 - Brawley Wash Primary Flood Corridor Study, Simons, Li & Associates, 6/1/1999.
• Floodplain Study FP-043-1995 - Idle Hour Wash Letter of Map Revision, Simons, Lie & Associates, 3/24/1995.
• Floodplain Study FP-044-1982 - Central Arizona Project (CAP) Tucson Aqueduct, Bureau of Reclamation, U.S. Dept. of the Interior, Reach 3 May 1982, Reach 4 April 1984, Reach 5 June 1983.
• Floodplain Study FP-045-2003 - Summerhaven Hydrologic and Hydraulic Analysis, URS, 12/30/2003.
• Floodplain Study FP-046-2006 - Sheet Flood Mapping for Unincorporated Pima County, PCRFCD, 8/8/2007.
• Floodplain Study FP-047-2007 - Silverbell Trails Estates, Delph Engineering, Inc., 10/1/2003.
• Floodplain Study FP-048-2008 - Hacienda Sol Wash Floodplain Analysis, PC RFCD, 3/14/08 and Floodplain Analysis for an unnamed wash at the Intersection of Hacienda del Sol Road and River Road, PC RFCD, 3/14/2008.
• Floodplain Study FP-049-2007 - Diamond Bell Ranch Hydrology, Psomas, 10/12/2007.
• Floodplain Study FP-050-2008 - Floodplain Study for Flecha Caida Ranch Estates #9, Including Portions of Flecha Caida Ranch Estates #1 and #2 and Las Lomas de Catalina, JE Fuller Hydrology & Geomorphology Inc., 4/8/2008
• Floodplain Study FP-051-2008 - Floodplain Analysis for Tanuri Wash, PCRFCD, 6/2/2008.
• Floodplain Study FP-052-2004 - Emergency Evaluation Study Report on the July 29, 2003, Flooding in Ajo, Arizona, TetraTech, April 2004. Ajo Flood depth map, PCRFCD, 2010.
• Floodplain Study FP-053-2015 - Floodplain Mapping of Tres Lomas Wash and Woodland Wash and Their Tributaries, RFCD, 8/3/2015.
  • The previous study of  Woodland Wash is available by viewing Special Study 53 (SUPERSEDED) - Floodplain Mapping of the Woodland Wash and its Tributaries, RFCD, February 2010.
• Floodplain Study FP-054-2010 - Floodplain Mapping of the Geronimo Wash and its Tributary, RFCD, February 2010.
• Floodplain Study FP-055-2010 - Flecha Caida LOMR Technical Data Notebook, RFCD, 7/15/2010.
• Floodplain Study FP-056-2010 - Craycroft Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping of the Craycroft Wash and its Tributary, RFCD, 7/15/2010.
• Floodplain Study FP-057-2011 - Old Grandad Tank Technical Data Notebook for Hydrologic and Hydraulic Mapping of the Old Grandad Tank Wash and its Tributary, RFCD, 11/18/2010.
• Floodplain Study FP-058-2013 - Wentworth Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping of Wentworth Wash and its Tributary, RFCD, 12/3/2010.
• Floodplain Study FP-059-2010 - Castle Rock Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping of Castle Rock Wash and its Tributary, RFCD, 12/3/2010.
• Floodplain Study FP-060-2010 - Trails End Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping of Trails End Wash and its Tributary, 5/6/2010.
• Floodplain Study FP-061-2011 - Picture Rocks Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 1/14/2011. For background information, please see the Picture Rocks Alluvial Fan Floodplain Mapping page.
• Floodplain Study FP-062-2010 - West Speedway Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/6/2010.
• Floodplain Study FP-063-2010 - Camino de Oeste Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/30/2010.
• Floodplain Study FP-064-2010 - Del Cerro Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/26/2010.
• Floodplain Study FP-065-2010 - Roger Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/27/2010.
• Floodplain Study FP-066-2010 - Sweetwater Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/26/2010.
• Floodplain Study FP-067-2010 - Unnamed Wash 1 Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/17/2010.
• Floodplain Study FP-068-2009 - Ventana Canyon Wash and Esperero Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, JE Fuller Hydrology & Geomorphology, Inc., 9/13/2010.
• Floodplain Study FP-069-2015 - Scott's Knob Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/1/2015.
• Floodplain Study FP-070-2003 - 12-10 Area Floodplain Mapping, RFCD, 6/3/2003.
• Floodplain Study FP-071-2011 - Race Track Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 7/15/2011.
• Floodplain Study FP-072-2013 - Canyon del Salto Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 8/5/2011.
• Floodplain Study FP-073-2008 - Friendly Village Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, Tetra Tech, Inc., 10/7/2008.
• Floodplain Study FP-074-2011- Nanini Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 11/28/2011.
• Floodplain Study FP-075-2011 - Casas Adobes Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 11/28/2011.
• Floodplain Study FP-076-2011 - Campbell Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 2/21/2011.
• Floodplain Study FP-077-2012 - Via Entrada Wash Letter of Map Revision Technical Data Notebook, RFCD, 3/20/2012.
• Floodplain Study FP-078-2010 - Finger Rock Wash Letter of Map Revision Technical Data Notebook, RFCD, 10/15/2010. Report does not include all exhibits, as they are too large to place on the website. Please contact the District to obtain the Exhibits.
• Floodplain Study FP-079-2017 - Pegler Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 11/29/2012.
• Floodplain Study FP-080-2012 - Unnamed Wash #12 Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 11/29/2012.
• Floodplain Study FP-081-2013 - Tucson Mountains Unnamed # 02 and # 03 Washes Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 11/25/2013. 
• Floodplain Study FP-082-2014 - Yuma Mine Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 1/20/2014.
• Floodplain Study FP-083-2014 - Deep Well Ranch and Rinconado Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping (Large file:  27 MB PDF), RFCD, 12/17/2014.
• Floodplain Study FP-084-2014 - North Manor Wash (including Hillcrest Wash) Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 12/23/2014.
• Floodplain Study FP-085-2014 - Green Valley Drainageways Basin Management Study (Large file:  40 MB PDF), Figure 4B and Figure 5 (Large file:  20 MB PDF), CMG Drainage Engineering, Inc., 6/27/2014.
• Floodplain Study FP-086-2015 - Catalina Foothills Unnamed Wash #5 Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/1/2015.
• Floodplain Study FP-087-2015 - Sabino Vista Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 3/12/2015.
• Floodplain Study FP-088-2015 - Tucson Mountains Unnamed # 10 Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 7/1/2015. 
• Floodplain Study FP-089-2016 - Caliente Hills Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/23/2016.
• Floodplain Study FP-090-2014 - Airport Wash (South) Basin Management Study, CMG Drainage Engineering and Kimley Horn, 10/17/2014.  This study includes several separate reports covering Hughes Wash, El Vado Wash, Santa Clara Wash and Valencia Wash.
• Floodplain Study FP-091-2008 - Pima Wash LOMR, CMG Drainage Engineering, 1/8/2008.
• Floodplain Study FP-092-2020 - Carmack Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, Arroyo Engineering, 09/16/2020.
• Floodplain Study FP-093-2016 - Airport Wash Basin Management Study, CMG Drainage Engineering and Kimley Horn, 06/25/2016.
• Floodplain Study FP-094-2016 - Unnamed Wash #4 (Catalinas Mountains) Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 12/16/2016.
• Floodplain Study FP-095-2018 - Indian Hills Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 7/10/2018.
• Floodplain Study FP-096-2019 - Red Butte/Saginaw Hill Area Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 7/8/2019.
• Floodplain Study FP-097-2019 - Upper Santa Cruz RiskMAP Technical Data Notebook for Hydrologic and Hydraulic Mapping, JE Fuller, 03/25/2019.
• Floodplain Study FP-098-2019 - North Ranch Technical Data Notebook for Hydrologic and Hydraulic Mapping, Arroyo Engineering, 03/14/2019. Floodplain Study FP-098-2019 - North Ranch Letter of Map Revision, Arroyo Engineering, 09/21/2020.
• Floodplain Study FP-099-2019 - Elephant Head Area Technical Data Notebook for Hydrologic Analysis and Floodplain Mapping, JE Fuller, 10/07/2019.
• Floodplain Study FE-100-2016 - Pantano Wash Management Study.
• Floodplain Study OT-101-2019 - Altar and Avra Valleys-Hydrology Report Technical Support Data Notebook, Stantec, Pima County, Arizona, 09/26/2019.
• Floodplain Study FE-102-2019 - Santa Cruz River Management Plan: Grant Rd to Pinal County Line (Trico Rd).
• Floodplain Study FE-103-2020 - Unnamed Tributary to Canada del Oro Wash-Hawser Street to Rollins Road Technical Data Notebook for Hydrologic Analysis and Floodplain Mapping, eec Inc.,Pima County Arizona, 07/31/2019.
• Floodplain Study FP-104-2017 - Arivaca Dam Emergency Action Plan (EAP), Pima County Arizona, 09/27/2017.
• Floodplain Study FP-105-2004 - Post Fire Inundation Maps, JE Fuller.

 

 

Silverbell Road LOMRs

• Floodplain Study FP-060-2010 - Trails End Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping of Trails End Wash and its Tributary, RFCD 5/6/2010.

• Floodplain Study FP-064-2010 - Del Cerro Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/26/2010.

• Floodplain Study FP-065-2010 - Roger Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/27/2010.

• Floodplain Study FP-066-2010 - Sweetwater Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 5/26/2010.

• Floodplain Study FP-067-2010 - Unnamed Wash 1 Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/17/2010.

Other Floodplain Studies

• Agua Caliente Wash Floodplain Study
• Airport Wash South Basin Management Study
• Analysis of 7-31-2006 Flood and Debris Flow Event
• Black Wash Floodplain Study
• Campbell Wash Floodplain Study
• Drainage Study for the Curley School Detention Basin, Ajo, Arizona, DMJM Harris, January 2006.
  
  Photographs of Walk-Through Inspection of Curley School Detention Basin
• Finger Rock Wash Floodplain Study
• Lee Moore Wash Basin Management Study
• Santa Cruz River Grant Road Floodplain Study
• Southeast Regional Park Hydrologic & Hydraulic Analysis
• Upper Santa Cruz River Risk Map Project
• Ventana Canyon and Esperero Wash Floodplain Study

Incorporated Area Studies

Please note that the studies and reports provided below were conducted by the Regional Flood Control District on behalf of an incorporated jurisdiction. The District is not responsible for their use by the requesting jurisdiction. Further, the District is not responsible for any regulatory decisions based on these studies/reports and may not be responsible for performing any recommended activities specified in these studies/reports. Any questions of intent, interpretation, implementation or regarding construction of proposed improvements should be addressed to the appropriate jurisdiction. Questions of a technical nature may be addressed to the District, but may be forwarded to the responsible jurisdiction for response.

Contact information for other jurisdictions can be found on the following webpage: Other Local Floodplain Management Agencies

City of South Tucson

City of Tucson

Town of Marana

Town of Oro Valley

North Ranch
Highland Wash
Carmack Wash

Town of Sahuarita

 

Water Resources, Riparian Habitat and SDCP Reports

 

• Santa Cruz River Management Plan
• PantanoWash/Rincon Creek Confluence Groundwater Evaluation, October 2014, RFCD
• Groundwater Withdrawals in Shallow Groundwater Areas, September 2008, Pima Association of Governments
• Shallow Groundwater Areas in Eastern Pima County, Arizona: Water Well Inventory and Pumping Trend Analysis, October 2012, Pima Association of Governments
• Canoa Ranch Groundwater Evaluation, June 2014, RFCD
• Corazon de Tres Rios Del Norte Groundwater Evaluation, November 2011, RFCD
• Water for the Environment Technical Paper, September 2009, City of Tucson and Pima County
• The Water Quality of Priority Streams in Pima County, April 2002, Pima Association of Governments
• Bingham Cienega Source Water Study, February 2001, Pima Association of Governments
• Cienega Creek Natural Preserve Non-Native Plant Species Study, April 2003, Pima Association of Governments
• Geologic Influences on the Hydrology of Lower Cienega Creek, December 2003, Pima Association of Governments
• Contribution of Davidson Canyon to Base Flows in Cienega Creek, November 2003, Pima Association of Governments
• Lower Cienega Basin Source Water Study, October 2000, Pima Association of Governments
• GIS Coverage Of Perennial Streams Intermittent Streams and Areas of Shallow Groundwater, January 2000, Pima Association of Governments
• Groundwater Condition in Rincon Valley, August 2004, Pima Association of Governments
• Riparian Protection Technical Paper: Water and Wastewater Infrastructure, Supply and Planning Study, Phase II, May 2009, City of Tucson and Pima County
• Water Usage Near Shallow Groundwater in Pima County, March 2007, Pima Association of Governments
• Groundwater Conditions in Sopori Basin, June 2005, Pima Association of Governments
• Stormwater Management Technical Paper, May 2009, City of Tucson and Pima County
• Anza Park Aquatic and Riparian Ecosystem Enhancement and Restoration Evaluation
• Conservation of Urban Amphibians in Tucson - Final Report
• Riparian Habitat Mitigation Plan Guidelines 
• Pima County's Withdrawal from Its Past - (Raymond Turner's report on area landscape changes over time)
• Cañada del Oro Ecological Reconnaissance,15-19 May 2004 - (report by Philip Rosen, The University of Arizona)
• Ecological Opportunities in the Lower Santa Cruz Valley - (report by Phil Rosen, U of A. Report addresses the potential role of the Santa Cruz River in Avra Valley and Santa Cruz River Flats)

U.S. Army Corps of Engineers Reports

• El Rio Antiguo Draft Feasibility Study, Pima County, Arizona
• El Rio Antiguo Final Environmental Impact Statement, Pima County, Arizona
• Gila River, Santa Cruz River Watershed Final Feasibility Report
• Tanque Verde Creek Limited Reevaluation Report and Environmental Assessment, revised 08/2002
• Paseo de las Iglesias Feasibility Reports and Environmental Impact Statements

Additional USACOE Reports (County employee access only)

Annual and Comprehensive Reports

The District creates Annual Reports and 5-year Comprehensive Program Reports to keep the public and public officials updated on the activities of the District.  These reports also contain budget information.  Please visit the Annual and Comprehensive  Reports Page to access these documents.