Flood Control District of Maricopa County

Storm Report - July 14-15, 1999

 

 

 

 

METEOROLOGY

 

  The airmass over Maricopa County on July 14th was unusually moist, with water content above normal for July. This condition was also present the previous 4 or 5 days, but no significant rains took place, though there was rain on the 13th over portions of the County. However, on these previous days there were significant and rather widespread storms over far western Arizona and southeast California due to a stationary disturbance in the upper atmosphere over this area.

A small portion of this disturbance moved across Maricopa County on the 13th, but the main portion remained centered near the Colorado River. The bulk of the upper air disturbance moved into Maricopa County on the 14th. This unseasonably strong disturbance (making the air unstable), coupled with a very moist airmass resulted in our significant rains.

Note: This was a very unusual event. One reason is it occurred during the morning and afternoon hours. Normally we see our action during the evening. For another, the thunderstorms moved in from the southwest, rather than the southeast to northeast. Southwest winds usually result in NO thunderstorms, as higher terrain (such as to our east) is necessary to form the storms.

EJP

 

 

 

PRECIPITATION

Summary Statistics:

Total Automated Rain Gages: 227

Total Operational Automated Rain Gages: 225

Queen Creek Landfill had a locked tipping bucket, all remaining gages functioned throughout the event. South Mtn. Park HQ had a programming error which caused it to count by 2 instead of 1 during parts of the event - this data was edited and considered correct for this report.

 

For the period 7/14/99 09:00 through 7/15/99 09:00 -

Number of gages reporting more than 2.5 inches:

2

Number of gages reporting more than 2.0 inches:

12

Number of gages reporting more than 1.5 inches:

42

Number of gages reporting more than 1.0 inch:

100

Number of gages reporting more than 0.50 inch:

167

Number of gages reporting more than 0.01 inch:

218

Number of gages reporting no rainfall:

7

 

Depth-Duration Table For Selected Automated Rain Stations

Duration

10-Year Phoenix

10-Year Carefree

Missouri @16th St.

Paradise Valley CC

Pima @ Jomax

Flying E Tank

Durango Complex

5-min.

.47

.44

.35

.43

 .20

 .20

 .34

10-min.

.72

.68

.63

.71

 .35

 .39

 .62

15-min.

.92

.86

.71

.87

 .43

 .47

 .89

30-min.

1.27

1.19

.87

.98

 .67

 .71

 1.33

1-hour

1.61

1.51

1.54

1.65

 .91

 .87

 1.60

3-hour

1.82

1.87

1.65

1.65

 1.02

 1.50

 1.64

6-hour

2.07

2.32

1.85

1.69

 1.02

 1.50

 1.64

12-hour

2.30

2.72

1.85

1.69

 1.06

 1.69

 1.65

18-hour

 

 

2.24

2.17

 1.73

 1.89

 1.88

24-hour

2.53

3.13

2.44

2.17

 1.73

 1.93

 1.89

 

Appendix A contains a listing of rainfall depths measured at all stations for the 24-hour period ending on 07/15/99 at 09:00, in order of descending depth. Appendix B - download hourly values for all rain stations.

Rainfall Maps - 24 Hours Ending 07/15/99 @ 09:00

 

View an Isohyetal Map for this Storm (212 KB)

RUNOFF

Summary Statistics:

Total Automated Water-level Gages Installed: 103

Total Operational Automated Rain Gages: 101 - Indian Bend Wash @ Indian Bend Rd. and Indian Bend Wash Interceptor were out of service due to construction projects.

Water-level Gages which failed to operate during the Storm: 2 - ACDC @ 14th Street and Rittenhouse FRS

Number of Impoundment Structures measuring flow: 16 - (see Impoundment Stations Table)

Number of Stream Stations measuring flow: 43 - (see Stream Stations Table)

 

Impoundment Stations Table

Peak Stage

Peak Outflow

Peak Storage

Peak Capacity

Date-Time

Structure Name

ID

(ft)

(cfs)

(ac-ft)

(% full)

10th St. Wash Basin #1

4818

1.23

7

0.5

2

7/14-16:38

Adobe Dam

5539

6.74

311

134

1

7/15-12:59

Aspen Dam

5988

0.70

10

--

--

7/14-17:20

Casandro Dam

7133

5.86

14

21.7

15

7/15-05:57

Cave Buttes Dam

4904

17.9

203

516

1

7/15-19:37

Dreamy Draw Dam

4803

0.68

4

--

--

7/14-16:53

E.Fork CC #1

4648

1.25

15

1.2

2

7/14-16:22

E.Fork CC #3

4683

3.60

312

32.1

18

7/14-17:12

E.Fork CC #4

4658

3.65

71

8.4

11

7/14-16:24

Golden Eagle Park Dam

5978

3.36

91

--

--

7/14-12:21

Hesperus Dam

5993

1.05

12

--

--

7/14-16:29

New River Dam

5614

5.52

353

236

1

7/15-12:34

North Heights Dam

5983

0.97

12

--

--

7/14-18:13

Stone Ridge Dam

5968

0.91

4

--

--

7/15-09:19

Sunnycove FRS

5248

10.07

33

8.4

4

7/15-06:19

Sunset FRS

5233

6.80

22

9.6

11

7/15-05:40

 

Stream Stations Table

Peak Discharge

Peak Stage

Date-Time

Water-level Sensor Name

ID

(cfs)

(ft)

ACDC @ 36th St.

4808

324

7.67

7/14-17:28

ACDC @ 43rd Ave.

4823

1195

1.73

7/15-07:08

ACDC @ 67th Ave.

5523

650

4.00

7/14-21:40

Adobe Dam Outlet

5538

508

4.50

7/15-12:44

Agua Fria @ Buckeye

5403

328

0.70

7/15-12:10

Agua Fria @ Grand

5503

326

3.56

7/15-15:49

Berneil Wash

4688

447

1.73

7/14-16:57

Casandro Wash

7093

42

0.55

7/15-04:53

Cave Buttes Outlet *

4903

32

1.94

7/14-15:48

Cave Cr. @ Spur Cross

4923

1500

7.51

7/15-08:51

Cave Cr. Nr Cave Creek

4918

393

1.65

7/15-08:26

Cave Creek @ Cactus

4833

1154

11.28

7/14-19:15

Centennial Wash @ Wenden

5093

209

1.00

7/14-19:28

Colter Channel @ El Mirage

5408

37

0.75

7/15-07:34

Dysart Channel @ El Mirage

5423

39

0.95

7/15-07:19

Dysart Drain @ LAFB

5413

73

1.18

7/15-10:33

EFCC nr 7th Ave.

4668

847

4.45

7/14-17:04

Estrella Fan

6893

3

0.10

7/14-15:52

Flying E Wash

7083

444

2.38

7/15-04:49

Gila @ Olberg

0783

462

1.04

7/15-08:11

Guadalupe Channel

6603

115

0.85

7/15-08:34

Hartman Wash

7063

97

0.95

7/15-04:54

Hassy @ Box Canyon

5308

560

4.20

7/15-10:30

Hassy @ Wagoner Rd.

5353

300

4.15

7/15:05:02

IBW @ Indian School

4618

624

3.23

7/14-21:59

IBW @ McDonald

4628

677

1.20

7/14-20:56

IBW @ McKellips

4603

320

1.67

7/15-09:37

IBW @ Shea Blvd.

4693

896

2.20

7/14-17:15

IBW @ Sweetwater

4643

159

1.35

7/14-16:26

Lake Marguarite

4678

237

1.75

7/14-17:00

McMicken Floodway

5438

98

1.65

7/15-08:01

New River @ Bell

5598

155

0.60

7/15-22:48

New River @ Glendale

5508

1525

1.55

7/15-09:30

New River Dam Outlet

5613

198

4.59

7/15-10:52

Old X-cut @ McDowell

4748

239

1.40

7/14-16:40

Powder House Wash

7113

23

0.30

7/15-05:14

Sauceda Wash

6923

284

2.21

7/14-23:33

Skunk Cr. @ I-17

5568

2119

3.27

7/15-08:52

Skunk Cr. Nr New River

5583

950

3.95

7/15-05:41

Sols Wash nr Matthie

7043

468

0.65

7/15-06:08

South Mountain Fan

6563

245

1.65

7/14-16:22

Tatum Basin Inflow

4638

41

0.38

7/14-17:32

Vekol Wash

6983

700

3.85

7/14-19:09

 

 

Selected Runoff Plots

 

 

 

 

APPENDIX A

FLOOD CONTROL DISTRICT OF MARICOPA COUNTY

Precipitation Report - 24 hours ending 7/15/99 at 09:00

*** Data is Preliminary ***

Gage Name

Storm Total

Month Total

Year Total

Gage Location

Mt. Ord

2.64

3.03

5.87

Top of Mt. Ord, 4 mi. E of Sunflower in the Mazatzal Mtns.

Minnehaha

2.56

5.08

8.15

8 mi. E of Wagoner, Yavapai County

Crown King

2.48

6.18

9.76

Crown King, Bradshaw Mtns, 24 mi. SSE of Prescott

Santa Rosa @ SR 84

2.44

3.78

4.80

11 mi. West of SR 93 (Casa Grande) on SR 84

Missouri @ 16th St.

2.44

3.03

4.49

1/2 mi. North of Camelback Rd. and 16th St.

Yarnell Hill

2.32

3.78

6.97

1 mi. ENE of Yarnell, Yavapai County

Horsethief Basin

2.17

3.90

8.54

At HB Recreation Area, 6 mi. SE of Crown King

P.V. Country Club

2.17

2.72

4.06

1/2 mi. North of Lincoln Dr. and Tatum Blvd.

Towers Mtn.

2.09

3.66

8.46

3 mi. NW of Crown King, Yavapai County

Chrysler P. Ground

2.09

2.36

4.13

3 mi. ESE of Circle City, 1.5 mi. N of Wittmann

Sunset Point

2.05

3.86

7.95

Rest Area on I-17, 10 mi. N of Black Canyon City

White Tanks E.P.

2.05

3.15

4.92

Top of White Tank Mtns., 13 mi. N of Buckeye

E.Fork CC #3

1.93

2.24

3.94

1/2 mi. SW of Union Hills Dr. and Cave Creek Rd.

Flying E Tank

1.89

2.28

4.80

6.3 mi. WSW of the US 93 / US 89 junction at Wickenburg

Wilhoit

1.85

2.83

5.59

At Wilhoit, 10 mi. SSW of Prescott, Yavapai County

Columbia Hill

1.85

2.80

6.50

5 mi. NNW of Castle Hot Springs

Thomas & 16th St.

1.85

2.20

3.54

16 th St. at Thomas Rd.

Hartman Wash

1.77

2.48

5.16

On US 60 bridge, 6.3 mi. West of US 60 / US 93

Thomas @ 48th St.

1.77

2.17

3.23

Thomas Rd. and 48th St.

ACDC @ 36th St.

1.77

2.09

3.35

1/2 mi. North of 36th St. and Camelback Rd.

Pima @ Jomax

1.73

2.87

5.63

1/8 mi. NW of Pima Rd. and Jomax Rd.

South Mtn.Park HQ

1.73

4.45

6.27

In South Mtn. Park, alignments of Elliot and 7th Ave.

Arizona Hunt Club

1.73

2.56

5.59

5 mi. NNW of Cordes Junction

Wickenburg Airport

1.73

2.24

4.88

4.5 mi. West of the US 60 / US 93 junction

Wittmann

1.73

2.13

4.06

US 60/93 at Wittmann, 4 mi. SE of Circle City

Upper Skunk Creek

1.69

2.87

5.39

4 mi. E of New River

Vulture Mine

1.69

2.56

5.12

3 mi. SW of Wickenburg

Cave Creek Landfill

1.69

2.48

4.72

1/2 mi. E of Carefree Hwy. and the 40th St. alignment

E.Fork CC #1

1.69

2.13

3.82

1/4 mi. E of Beardsley Rd. and Cave Creek Rd.

South Mountain Fan

1.65

3.82

5.75

Alignments of Ray Rd. and 35th Ave. in S. Mtn. Park

Skunk Creek @ I-17

1.65

3.50

5.51

I-17 at Jomax Rd. alignment

Durango Complex

1.65

2.24

3.74

27th Ave. and Durango St.

E.Fork CC #4

1.65

1.97

4.25

1/4 mi. S of Union Hills Dr. and 32nd St.

Salt R. @ 40th St.

1.65

1.81

2.60

S. side of Salt River near 40th St.

Sunup Ranch

1.61

2.32

4.53

1 mi. SSW of New River

Black Mountain

1.61

1.97

4.25

Along US 60, 9 mi. West of US 60 / US 93n at Wickenburg

Perry Park

1.61

1.97

3.11

1/8 mi. S of Thomas Rd. and 32nd St.

ParadiseValley Park

1.57

1.97

3.82

1/2 mi. E of Union Hills Dr. and 32nd St.

Humboldt Mountain

1.54

2.83

4.76

13 mi. NE of the Town of Cave Creek

Berneil Wash

1.54

2.72

4.37

Just east of Doubletree and Invergordon

Flying E Wash

1.54

2.32

4.88

On US 60 bridge, 3 mi. West of US 60 / US 93

White Tanks #3

1.54

1.77

3.54

4 mi. N of I-10 on Jackrabbit Trail alignment

Mt. Union

1.46

3.58

9.92

Top of Mt. Union, 10 mi. SSE of Prescott

Constellation Road

1.46

2.28

4.72

1.4 mi. NE of the US 60 / US 93 junctionon

Patton Rd.

1.46

2.09

4.21

7 mi. E of Grand Ave. on Patton Rd.

Lake Marguarite

1.42

3.07

4.61

1/4 mi. W of Doubletree and Hayden Rd.

Flores West

1.42

2.56

5.12

Along US 93, 3.2 mi. NW of the US 93 / US 89 junction

Casandro Wash

1.42

2.20

4.84

On US 60 bridge, 2 mi. West of US 60 / US 93

Sunnycove FRS

1.42

1.97

4.33

1 mi. SW of the US 60 / US 93 intersection in Wickenburg

Highland @ 68th St.

1.42

1.85

3.19

1/4 mi. N of Highland and 68th Street

Signal Peak

1.38

4.45

5.67

8 mi. SSW of Globe

Black Hill

1.38

2.99

5.51

2.3 miles WSW of the US 93 / US 89 junction

Hassayampa @ US 60

1.38

2.24

4.45

Hassayampa River at US 60/93 in Wickenburg

Estrella Fan

1.38

2.24

3.50

Alignments of El Mirage Rd. and Germann Rd.

Horseshoe Ranch

1.38

1.89

4.61

10 mi. SE of Cordes Junction

Salt R. @ Priest Dr

1.38

1.65

2.76

West side of Salt River bridge at Priest Drive

Carefree Ranch

1.34

2.52

5.75

3.5 mi. NE of Skyranch Airport

New River Dam

1.34

2.40

4.69

1/2 mi. NE of Jomax Rd. and 83rd Ave.

Jefferson @ 4th Ave

1.34

2.09

3.27

County Building, 4th Ave. and Jefferson St.

Upper Estrella Fan

1.34

1.97

3.19

1/2 NE of the El Mirage & Germann Rd Alignments

IBW @ McKellips Rd.

1.30

2.83

4.25

On Indian Bend Wash 1/4 mi. South of McKellips

Lake Pleasant

1.30

2.72

4.69

On New Waddell Dam at Lake Pleasant

Morristown

1.30

2.60

4.80

US 60/93 at Morristown, 10 mi. SE of Wickenburg

Sols Tank

1.30

2.56

5.35

6.3 mi. WNW of the US 93 / US 89 junction

Salt R. @ 67th Ave

1.30

2.13

3.66

67th Ave & Roeser St., N of Salt River

Fraesfield Mountain

1.30

1.65

5.16

Near the alignments of Dixaleta Dr. and 128th St.

Old Xcut @ McDowell

1.30

1.65

2.83

McDowell Rd. at Hohokam Expressway

I-17 at SR 169

1.26

2.28

4.80

I-17 at SR 169 (Cherry Rd.)

Sunset FRS

1.26

1.93

4.41

3/4 mi. WSW of the US 60 / US 93 intersection in Wickenburg

South Mountain Park

1.26

1.89

3.03

Alignments of Elliot Rd. and 24th St.

Seven Springs

1.22

2.56

5.35

15 mi. NNE of the Town of Cave Creek

Powder House Wash

1.22

2.05

4.25

1/2 mi. NE of the junction of US 60 and Constellation Rd.

T-bird @ 7th St.

1.22

1.77

3.11

1/4 mi. SW of Thunderbird Rd. and 7th St.

Stanton

1.18

2.52

5.31

6.5 mi. East of Congress, Yavapai County

Cave Creek @ Cactus

1.18

2.40

3.58

1/4 mi. ENE of I-17 and Cactus Rd.

NW Regional Landfil

1.18

2.01

3.82

Near 195th Ave. and Deer Valley Rd.

Salt River Landfill

1.18

1.18

2.40

1/4 mi. N of Gilbert Rd. at Beeline Highway

Circle City

1.14

2.01

4.37

Along US 60/93, 14 mi. SE of Wickenburg

Aztec Park

1.14

1.85

3.43

Near Thunderbird at Frank Lloyd Wright Blvd.

ASU South

1.14

1.69

2.99

1/4 mi. NNE of Broadway Rd. and Mill Ave.

Congress

1.14

1.46

3.78

Junction of US 89 and SR 71

New River Landfill

1.10

2.01

3.94

4 mi. ENE of New Waddell Dam

Cesar Chavez Park

1.10

2.01

3.39

South end of park, 35th Ave. and Baseline Rd.

Casandro Dam

1.10

1.89

4.25

1.1 mi. West of the US 60 / US 93 junction

Grand @ 27th Ave.

1.10

1.57

2.80

Grand Avenue near 27th Avenue

Tatum Basin Rain

1.10

1.50

3.27

Near Shea Blvd. and 44th St.

Roeser @ 2nd St.

1.10

1.50

1.54

1/2 mi. SSE of Broadway Rd. and Central Ave.

Cloudburst Wash

1.10

1.10

3.58

2mi. NW of SunRidge Golf Course, Fountain Hills

Greenway & 32nd Ave

1.06

2.13

3.58

1/4 mi. East of Greenway Rd. and 32nd Ave.

Castle Hot Springs

1.06

1.42

3.54

6 mi. NE from US 60/93 on Castle Hot Springs Rd.

Pinnacle Peak Vista

1.02

2.48

4.41

1/2 mi. SSE of Deer Valley Rd. & Pima Rd.

Pima @ Union Hills

1.02

2.48

4.25

1/4 mi. W of Pima Rd. and Union Hills

Cooks Mesa

1.02

2.40

5.71

10 mi. E of Black Canyon City in the New River Mtns.

Hassy @ Wagoner Rd

1.02

2.20

5.47

6 mi. ESE of Kirkland Junction

Gladden

1.02

2.09

3.98

US 60 at Gladden, 34 miles W of Wickenburg

McDowell Mtn. Park

1.02

1.85

4.84

Off Palisades Dr., McDowell Mtn. Park, 4 mi. WSW of Rio Verde

Florence Junction

1.02

1.57

3.66

1.5 mi. NW of Florence Junction

Queen Creek Rd.

1.02

1.34

2.99

1/4 mi. NE of Queen Creek Rd. and Ellsworth Rd.

EMF @ Arizona Ave.

1.02

1.30

2.99

On the SR 587 bridge 3 mi. South of Riggs Rd.

Reata Pass Dam

1.02

1.18

4.13

1/2 mi. South of Dynamite Blvd. and 112th St.

10 St.Wash Basin #1

0.98

2.01

3.19

1/4 mi. SW of Peoria Ave. and Cave Creek Rd.

McMicken Floodway

0.98

1.77

3.46

1/2 mi. N of Grand Ave. and Deer Valley Rd.

Thunderbird Academy

0.98

1.73

3.35

1/4 mi. ESE of Thunderbird Rd. and Scottsdale Rd.

Sols Wsh nr Matthie

0.98

1.57

3.74

Sols Wash at SPRR bridge, 2 mi. N. of Wickenburg Airport

Centennial Wash

0.98

1.34

3.39

1 mi. N of US 60, 19 mi. W of Wickenburg

Golden Eagle Blvd.

0.94

1.97

5.08

NW1/4 of T3N-R6E-Section 5 at Chaparral Water Tank

Papago Park

0.94

1.65

2.76

1/4 mi. N of McDowell Rd. and 52nd St.

IBW @ Indian School

0.94

1.46

2.76

Indian School Road at Hayden Road

Maryland @ 27th Ave

0.94

1.14

2.60

Near I-17, 1/2 mi. North of Bethany Home Rd.

Smith Peak

0.91

2.56

4.09

Harcuvar Mtns., 13 mi. NW of Aguila

Deer Valley Airport

0.91

2.05

4.06

Deer Valley Rd. and 7th Ave.

Osborn @ 64th St.

0.91

1.65

2.87

200 yds. E. of Osborn Rd. and 64th Street

Hesperus Wash

0.91

1.54

4.65

NW1/4 of T4N-R6E-Section 31 near Dixie Mine

Buckeye @ 75th Ave.

0.91

1.34

2.95

1/4 mi. N of Buckeye Rd. and 75th Ave.

Chandler @ AlmaSchl

0.91

1.26

2.80

1/4 mi. SE of Chandler Blvd. and Alma School Rd.

EMF @ Queen Creek

0.91

1.18

2.32

1/3 mi. West of Queen Creek Rd. and Higley Rd.

IBW Interceptor

0.87

2.87

4.17

1/4 mi. SW of Pima Rd. & Indian Bend Rd.

Prescott Valley

0.87

2.32

5.24

5 mi. N of the intersection of SR 69 and Roberts Rd.

Martinez Creek

0.87

2.20

4.53

1 mi. East of the US 93 / US 89 junction

Harquahala Mtn.

0.87

2.13

4.57

Top of Harquahala Mtn., 36 mi. WSW of Wickenberg

Holly Acres

0.87

1.26

2.64

1/2 mi. SW of Southern Ave. and 107th Ave.

Sols Wash

0.87

1.10

4.09

Intersection of SR 71 and US 93, 16 mi. NW of Wickenburg

IBW @ Indian Bend

0.83

2.83

4.25

On Indian Bend Wash just S. of Indian Bend Rd.

Broadway @ Dobson

0.83

2.31

3.82

1/8 mi. SW of Broadway Rd. and Dobson Rd.

Sun City West

0.83

2.28

4.21

1/4 mi. SE of the Beardsley Rd. & Litchfield Rd. alignments

Hesperus Dam

0.83

1.93

3.23

1/4 mi. N of Richwood Ave. and Golden Eagle Blvd.

Cave Cr.@ SpurCross

0.83

1.89

2.87

3.5 mi. North of the Town of Cave Creek

McMicken Dam

0.83

1.77

3.39

1/4 mi SE of Deer Valley Rd and Cotton Lane

ACDC @ 14th St.

0.83

1.65

2.99

1/2 mi. North of Glendale Ave. and 14th St.

ACDC @ Cave Creek

0.83

1.54

2.80

Mountain View Rd. near 23rd Ave.

IBW @ Sweetwater

0.83

1.50

3.35

1/2 mi. E of 32nd St. and Sweetwater Ave.

Asher Hills

0.83

1.30

3.62

Off Asher Dr. in McDowell Mtn. Park, 1 mi. W of Rio Verde

Fitch Park

0.83

1.14

2.24

1/2 mi. N of University Dr. and Center St.

ACDC @ 43rd Ave.

0.83

0.98

2.36

1/4 mi. NW of Peoria Ave. and 43rd Ave.

Ahwatukee

0.79

1.46

2.72

Near 44th St. 1/4 mi. SW of Warner Road

Gila R. @ 116th Ave

0.79

1.30

2.95

1/4 mi. NNW of 115th Ave & Baseline Rd.

Mid-Martinez Creek

0.79

1.26

3.62

4.4 mi SSE of the US 89 / SR 71 junction

Garfias Mtn. Ranch

0.79

1.22

4.29

6 mi. WSW of Castle Hot Springs, off Castle Hot Springs Rd.

Maryvale Muni Golf

0.79

1.14

2.91

1/4 mi. N of Indian School Rd. and 59th Ave.

Dreamy Draw

0.79

1.14

2.56

1/4 mi. SSW of the 24th St. and Dulap Ave. alignments

City of Glendale

0.79

1.02

2.87

Grand Avenue at 63rd Avenue

Crossroads Park

0.79

0.98

2.28

1/2 mi. NW of Ray Rd. and Greenfield Rd.

Butler Park

0.79

0.94

2.48

1/4 mi. SE of 59th Ave. and Olive Ave.

Horner Mtn. Ranch

0.75

1.50

3.70

11 mi. ENE of Cordes Junction

O'Brien Gulch

0.75

1.38

3.74

11 mi. NE of Wickenburg, Yavapai County

Santa Cruz @ SR 84

0.75

1.18

2.13

3 mi. West of SR 93 (Casa Grande) on SR 84

Whitlow Ranch Dam

0.74

1.55

1.59

5 mi. NE of Florence Junction

Brown Rd. @ Horne

0.74

0.91

0.91

100 yards N of Brown Rd. and Horne in Mesa

North Heights Dam

0.71

1.69

2.87

400 yds. SW of Sierra Madre Dr. and Golden Eagle Blvd.

Kleinman Park

0.71

1.54

2.76

1/2 mi. SE of Broadway Rd. and Alma School Rd.

Lost Dog Wash

0.71

1.02

2.28

1/2 mi. NNW of Shea Blvd. and 128th St.

Queen Creek @ CAP

0.67

1.57

3.35

Queen Creek at Central Arizona Project

Falcon Field

0.67

0.75

2.20

1/4 mi. NE of McKellips Rd. & Greenfield Rd.

Gila @ Maricopa Rd

0.63

1.61

2.83

Gila River at Maricopa Road bridge

Cave Buttes Dam

0.63

0.83

2.28

1/4 mi. N. of the Happy Valley Rd. & 16th St. alignments

Signal Butte FRS

0.63

0.71

2.13

1/4 mi. NE of Signal Butte Rd. and Brown Rd.

Fountain Hills Fire

0.59

1.34

3.39

At Palisades Blvd. Fire Sta. nr xsecn. with Fntn. Hills Blvd.

Freestone Basin

0.59

1.14

2.44

1/2 mi. SSE of Guadalupe Rd. and Lindsay Rd.

Guadalupe Channel

0.59

0.98

2.80

1/4 E of Power Rd. & Guadalupe Rd.

Tat Momolikot Dam

0.55

3.86

4.72

19 miles SW of Casa Grande

New River @ Bell

0.55

1.65

3.27

Bell Rd. at 83rd Ave.

Centennial Levee

0.55

1.61

3.31

3 mi S. of I-10, 1 mi. E. of Western County border

StoneRidge Dam

0.55

1.26

3.43

1/4 mi. W of Cholla Dr. and Fountain Hills Blvd.

Grand @ Peoria Ave.

0.55

0.91

2.72

Intersection of Grand Ave. & Peoria Ave.

Gila Bend Mountains

0.51

2.48

3.98

16 mi. NW of Painted Rock Dam off Agua Caliente Rd.

Dysart @ Bell Rd.

0.51

1.65

3.31

Dysart Rd. at Bell Rd., Surprise

Dewey

0.51

1.61

3.94

5 mi. E of Dewey off Orme Ranch Rd.

Dysart Drain @ LAFB

0.51

0.71

2.40

1/4 mi. W of Northern Ave. and Litchfield Rd.

Hassy @ Box Canyon

0.47

1.81

4.57

6 mi. N of Wickenburg on Hassayampa River, Yavapai County

Colter @ El Mirage

0.47

0.67

2.24

1/4 mi. N of Camelback and El Mirage Rd.

Narrows Dam

0.47

0.59

2.52

5 mi. SE of Salome off Salome Highway

ACDC @ 67th Ave.

0.43

1.34

3.07

67th Ave. Bridge at Arizona Canal, Glendale

SunRidge Canyon Dam

0.43

1.26

3.39

200 yds.W of Lago Blvd. and Palisades Blvd.

Broadway @ Lindsay

0.43

1.22

2.44

1/4 mi. E of Broadway Rd. & Lindsay Rd.

Magma FRS

0.43

0.83

2.44

7 mi. NNW of Florence

Spookhill FRS

0.43

0.55

1.89

1/2 mi. N of McDowell Rd. and Bush Highway

Bender Wash

0.39

2.87

3.78

Just North of I-8, 10 mi. East of Gila Bend

Agua Fria @ Buckeye

0.39

0.79

2.83

Buckeye Rd. Bridge over Agua Fria River, nr Avondale

Mountain View Park

0.39

0.47

1.73

1/2 mi. N of University Dr. and Lindsay Rd.

Waterman Wash

0.35

1.22

2.52

El Mirage Rd. and Riggs Rd. alignments

EFCC nr 7th Ave.

0.35

0.63

2.48

Near 7th Ave., 1/2 mi. South of Greenway Rd.

Queen Ck.@ Rittenhs

0.35

0.47

1.97

1/3 mi. SE of the Signal Butte & Chandler Heights alignments

Thompson Peak

0.35

0.43

1.93

McDowell Mtns, 120th St. and Bell Rd. alignments

Vekol Wash

0.31

2.28

3.54

On I-8 bridge, halfway between Gila Bend and Casa Grande

Buckeye FRS #2

0.31

1.54

3.31

West end of Buckeye FRS #2, 5 mi N of Buckeye

NewRiver @ Glendale

0.31

0.59

2.48

1/2 mi. E of 99th Ave. on Glendale Ave. bridge

Apache Trail

0.31

0.43

2.28

1/3 mi. NE of Broadway Rd. and Idaho Rd.

Sacaton Peak

0.31

0.43

1.42

4.5 miles E. of the SR387 / I-10 junction

Tiger Wash Fan

0.28

1.30

3.03

1 mi. W of Eagle Eye Rd. and 4 mi. N of Salome Highway

Mt. Oatman

0.28

1.10

2.60

8 mi. WSW of Painted Rock Dam

IBW @ Shea Blvd.

0.28

0.71

2.80

Shea Blvd. at 52nd Street

Carriage Lane Park

0.28

0.51

1.65

1/2 mi. South of Price Rd. and Guadalupe Rd.

Kings Ranch

0.28

0.39

2.24

7 mi. ESE of Apache Junction

Usery Park WS

0.28

0.39

2.09

1/4 mi. WNW of the Crismon Rd. and Thomas Rd. alignments

Adobe Dam

0.24

1.18

2.68

1/4 mi. South of Deer Valley Rd. & 43rd Ave.

Thunder Mountain

0.24

0.39

1.65

1/2 mi. W. of Ellsworth Rd. and Indian School Rd. alignments

Usery Mtn. Park

0.24

0.28

2.13

1/3 mi. East of the McDowell Rd. and Crismon Rd. alignments

Guadalupe FRS

0.24

0.28

1.30

1/4 mi. SSW of Baseline Rd. and I-10

Apache Jct. FRS

0.24

0.24

1.93

1/3 mi. NW of Lost Dutchman Blvd. and Idaho Rd.

Vineyard FRS

0.24

0.24

1.89

Alignments of Tomahawk Rd. and Williams Field Rd.

Sand Tanks Wash

0.20

1.34

3.19

9 mi. SSE of Gila Bend

Gila @ Olberg

0.20

0.39

1.77

Gila River at Olberg Bridge, 3 mi. ENE of Sacaton

Powerline FRS

0.20

0.24

1.65

Alignments of Idaho Rd. and Warner Rd.

Centennial Railroad

0.16

2.05

3.50

8 mi. NW of Old US 80 at the Gila River

Buckeye FRS #3

0.16

1.22

3.11

1/4 mi. NE of I-10 and Watson Rd.

Mesa Tower

0.16

0.47

1.77

1/4 NW of McQueen Rd. and Baseline Rd.

Agua Fria @ Grand

0.16

0.35

1.02

Grand Ave. bridge at Agua Fria River

Hassayampa R @ I-10

0.12

1.89

3.74

I-10 bridge over Hassayampa River, 12 mi WNW of Buckeye

Tuthill @ Ray Rd.

0.12

1.57

1.85

1/2 mi. East of Tuthill Rd. and Ray Rd.

Buckeye FRS #1

0.12

1.54

2.99

West end of Buckeye FRS #1, I-10 @ Hassayampa River

EMF @ Broadway

0.12

0.51

1.81

1/2 mi. SSE of Broadway Rd. and Higley Rd.

Upper Waterman

0.12

0.47

2.24

10 mi. WNW of Mobile

Jackrabbit Wash

0.08

1.02

3.19

16 mi. NNE of Tonopah, 20 mi. SSW of Wickenburg

Waterman @ Rainbow

0.08

0.75

1.85

Rainbow Valley Rd. at Queen Creek Rd.

Gila Bend Landfill

0.04

1.54

3.31

3 mi. North of the intersection of US 80 and I-8

Harquahala FRS

0.04

0.87

2.80

10 mi. WNW of Tonopah in Harquahala Valley

White Tanks #4

0.04

0.67

2.13

1/4 mi. NE of Tuthill Rd. and Van Buren St.

Upper Tiger Wash

0.04

0.24

2.28

11 mi. S. of Aguila off Eagle Eye Road

Gila @ Estrella Pky

0.04

0.24

1.54

Gila River at Estrella Parkway

Gillespie Dam

0.00

2.09

3.78

Gila River at Old US 80

Hassayampa Landfill

0.00

1.02

2.52

2 mi. NW of Hassayampa

Sauceda Wash

0.00

0.91

2.56

6 mi. SSW of Gila Bend

Saddleback FRS

0.00

0.59

2.01

7 mi. WSW of Tonopah in Harquahala Valley

Centennial @ Wenden

0.00

0.20

2.40

5.5 mi. NE of Salome on U.S. 60 Bridge

Queen Cr. Landfill

0.00

0.00

1.54

1/2 mi. SW of Ocotillo Rd. and Ellsworth Rd.

Rittenhouse FRS

0.00

0.00

1.46

Alignments of Goldfield Rd. and Germann Rd.


Appendix B - Hourly Values For All Rain Stations (text file)