Catalina Foothills

To provide comments on this watershed for consideration in the Floodplain Management Plan, contact Greg Saxe
Planning Manager
(520) 724-4633.
The Catalina Foothills Watershed includes numerous washes draining the southern slopes of the Santa Catalina Mountains, including Pima, Campbell, Finger Rock, Valley View and Ven-tana Canyon washes. Originating in near vertical terrain, these washes descend steeply through canyon walls before spilling onto the alluvial bajada foothills and then into the geologic floodplains associated with Rillito Creek. These watersheds are highly prone to flash flooding, even from rainfall miles away. These flash floods can quickly create life threatening and hazardous situations. Residents are advised to be cautious around washes anytime stormy conditions exist on Mount Lemmon. The District has documented flooded homes in this area. At-grade road crossings are another significant hazard when water is flowing. The District recommends obtaining flood insurance and planning ahead to know alternative routes to and from home. This watershed it is comprised of 46,340 acres and contains 1,490 acres of SFHA, 1,618 acres of locally identified floodplain and 3,394 acres of Pima County Regulated Riparian Habitat.

Flood Hazards

Maps

Click HERE to view the watershed map
Click HERE to view the outreach brochure

Floodplain Studies

Floodplain Study FP-006-1987 - Riverside Terrace Basin Management Plan, Dooley-Jones & Associates, 3/13/1987.

Floodplain Study FP-012-1989 - Valley View Wash, Flecha Caida Flood Phase 2, Simons, Li & Associates, Inc., 2/15/1989.

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 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-036-2008 - Camino Real Wash Letter of Map Revision, Castro Engineering an JE Fuller Hydrology & Geomorphology, Inc., 7/14/2008.

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-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-053-2015 - Floodplain Mapping of Tres Lomas Wash and Woodland Wash and Their Tributaries, RFCD, 8/3/2015.

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-069-2015 - Scott's Knob Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/1/2015.

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-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-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-089-2016 - Caliente Hills Wash Technical Data Notebook for Hydrologic and Hydraulic Mapping, RFCD, 6/23/2016.

Floodplain Study FP-091-2008 - Pima Wash LOMR, CMG Drainage Engineering, 1/8/2008.

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.

 

Erosion Studies

There are currently no erosion studies in this watershed.

Areas of Interest (Known Issues, Gaps, Problems and Needs)

Issues Provided by Public and Stakeholder Input

No issues have been identified to date.

Issues from the District Flood Response Manual

8.6.1 Data Gathering Needs
• No site specific issues identified.

8.6.2 Frequently Flooded Structures and Properties Subject to Damage
• 5584 N. Ventana Vista (114-64-4650) has been flooded by Esperero Wash. (T13S R15E Sec. 17)
• 5572 N. Ventana Vista (114-64-4660) has been flooded by Esperero Wash. (T13S R15E Sec. 17)
• Homes near the intersection of Havasu Road and Placita Arquilla and to the north are in the bottom of the geologic floodplain of Finger Rock Wash and are likely to get damaged during large events. (T13S R14E Sec. 03)

8.6.3 Infrastructure
• There are undersized culverts under Sunrise Rd. at Esperero Wash. Water weirs over the road, forcing the road to be closed. The water gets diverted and has caused flooding damage at 5584 N. Ventana Vista and 5572 N. Ventana Vista. Gabions have been damaged downstream of Sunrise. (T13S R15E Sec. 17)
• Monitor and document the flood water level at the UPRR railroad crossing. If the water level appears to be within 18 inches of the crossing infrastructure, call District or 911. (T13S R13E Sec 8)

8.6.4 Safety Concerns
• The Valley View Wash creates hazardous conditions, including erosion and deposition issues, on Calle Pantera. (T13S R14E Sec. 15)
• Do not attempt to cross Camino de la Tierra Road if there is any flood water on roadway. Otherwise, watch for flash flooding. (T13S R13E Sec. 08)

 

Recommendation of Actions and Floodplain Management Strategy

This section to be completed based on feedback received through the planning process.