WxServices_SOW_2013_Attachment_1.pdf

Example of QPF Format

Quantative Precipitation Forecast Issued 0850 03 March 2001

Descriptive notes about the forecast go here. The 3-hour time intervals shown in this example are typically acceptable for most storms but the government may request a shorter time interval (minimum 1-hour) at any time. The contractor, at his discrension, can use smaller time intervals at any time to better define the forecasted rainfall.

Forecasted Rainfall in Inches Beginning: 03 March 2001

Probability (%) Basin or

Area 6to

9to

12to

15to

18to

21to

0to

3to

6to

Total Precp 0 0-

1” 1- 2”

2”

Next 24 hrs

2-5 Day Outlook

San Luis Obisbo, Santa Barbara, and Ventura Counties

SLUIS .10 .20 .35 .65 .90 .40 .30 .10 .05 3.05 5 10 25 60 .90

SBARB .02 .15 .30 .55 .65 .30 .20 .10 2.27 5 10 25 60 .80

TWTCL .02 .15 .30 .50 .60 .25 .15 1.97 5 10 25 60 .75

SYNEZ .01 .10 .27 .37 .43 .18 .10 1.46 5 10 25 60 .60

VENTR .05 .22 .33 .40 .15 .10 1.25 5 15 30 50 .50

Los Angeles County Drainage Area (LACDA)

LA01 .01 .20 .75 .80 1.10 .55 .15 .08 3.64 5 10 30 55 .50

LA02 .05 .20 .80 .90 1.25 .60 .20 .10 4.10 5 10 25 60 .60

LA03 .04 .15 .65 .75 1.00 .45 .15 .07 3.26 5 10 30 55 .50

LA04 .07 .18 .70 .80 1.08 .50 .18 .08 3.59 5 10 30 55 .50

LA05 .05 .25 .85 .95 1.30 .65 .25 .10 4.40 5 10 25 60 .60

LA06 .01 .11 .40 .50 .65 .35 .12 .02 2.16 5 10 35 50 .30

LA07 .07 .18 .70 .80 1.10 .55 .20 .09 3.69 5 10 30 55 .50

LA08 .01 .10 .40 .50 .65 .30 .10 .01 2.07 5 10 35 60 .30

Santa Ana River Ba sin

SA01 .03 .10 .50 .55 .70 .40 .20 2.48 5 10 30 55 .20

SA02 .01 .10 .45 .50 .60 .30 .10 2.06 5 10 40 45 .15

SA03 .03 .10 .50 .55 .75 .40 .20 2.53 5 10 25 60 .20

SA04 .01 .10 .30 .40 .35 .20 .10 1.46 5 10 60 25 .10

SA05 .01 .05 .25 .30 .40 .20 .10 1.31 5 10 60 25 .10

SA06 .01 .05 .25 .30 .35 .20 .10 1.26 5 10 60 25 .10

SA07 .01 .10 .35 .40 .55 .30 .10 1.81 5 10 60 25 .15

SA08 .01 .05 .15 .30 .20 .05 0.76 15 80 5 .05

SA09 .01 .05 .10 .25 .15 .05 0.61 15 80 5 .05

San Diego County

SDNOR .01 .05 .10 .10 .20 .25 .1 0.81 25 70 5

SDSOU .01 .05 .10 .10 .20 .25 .1 0.81 25 70 5

Arizona

ALAMO

ROOSV

VERDE

SALT

AGUA

COOL

SCRUZ

PTRK

LGILA .2 .2 .2 .60

SNOW LEVELS (Thousands of feet above Sea Level)

SOCAL 8 8 8 8 7 6 5 5 5

AZ 8 8 8 8 8 8 8 8 8

Enclosure 2

List of Basins/Areas Used in Quantitative Precipitation Estimates and Forecasts

1. Southern California Region

SLUIS San Luis Obispo County SBARB Santa Barbara County Coastal drainages TWTCL Twitchell Dam Basin SYNEZ Santa Ynez River VENTR Ventura County, Ventura River SP Sespe/Santa Paula Creeks SCR Santa Clara River CG Callegaus Creek LA01 LACDA Zone 1: Los Angeles River above Sepulveda Dam LA02 LACDA Zone 2: Tujunga Wash above Hansen Dam; Pacoima above Pacoima

Dam LA03 LACDA Zone 3: Los Angeles River below Sepulveda and Hansen Dams to

Firestone.

LA04 LACDA Zone 4: Rio Hondo above Whittier Narrows Dam LA05 LACDA Zone 5: San Gabriel River above Morris Dam LA06 LACDA Zone 6: Los Angeles River below Firestone; Rio Hondo below

Whittier Narrows LA07 LACDA Zone 7: San Gabriel River between Santa Fe and Whittier

Narrows Dams LA08 LACDA Zone 8: San Gabriel River below Whittier Narrows including

Brea and Fullerton Dam drainages SA01 Santa Ana River Zone 1: San Bernardino Mountains SA02 Santa Ana River Zone 2: San Timeteo Watershed SA03 Santa Ana River Zone 3: San Gabriel Mountains SA04 Santa Ana River Zone 4: Northwestern Valleys above Prado Dam SA05 Santa Ana River Zone 5: Santa Ana Mountains: Temescal and Coastal

Drainages SA06 Santa Ana River Zone 6: Santa Ana River below Prado dam and Carbon

Canyon SA07 Santa Ana River Zone 7: Northeastern Valleys above Prado Dam SA08 Santa Ana River Zone 8: Lower San Jacinto River SA09 Santa Ana River Zone 9: Upper San Jacinto River SDNOR San Diego County: Northern Drainages

SDSOU San Diego County: Southern Drainages

2. Arizona Region

ALMO Alamo Dam Basin ROOSV Roosevelt Dam Basin VERDE Verde River Basin SALT Salt River Basin AGUA Agua Fria Basin COOL Upper Gila River above Coolidge Dam SCRUZ Santa Cruz River Basin PTRK Gila River above Painted Rock Dam

LGILA Lower Gila River below Painted Rock Dam

3. Nevada Region

LV Las Vegas & vicinity PM Pine & Mathews Canyon Dams

Enclosure 2 (cont.)

Enclosure 3

Enclosure 4

Precip/Temp

Water Surface

Water Surface/Precip

Stream

Stream/Precip

Flood Control Basins

Reservoirs and Lakes

Mountain Peak

Quantitative Precipitation Forecast Zones (QPF)

Quantitative Precipitation Forecast Zone Boundaries

COLORADO RIVER BASIN

LOCATION MAP

ALAMO DAM AND LAKE

BILL WILLIAMS RIVER, COLORADO RIVER BASIN, ARIZONA

WATER CONTROL MANUAL

U.S. ARMY CORPS OF ENGINEERS

LOS ANGELES DISTRICT

Enclosure 5

PROJECT LOCATION

NOTE:

BASE MAP TRACED FROM AN ENLARGEMENT OF A PORTION OF U.S.G.S. MAP

(SCALE 1:300,000) OF STATE OF ARIZONA

ALAMO DAM AND LAKE

BILL WILLIAMS RIVER, COLORADO RIVER BASIN, ARIZONA

WATER CONTROL MANUAL

U.S. ARMY CORPS OF ENGINEERS

LOS ANGELES DISTRICT

Enclosure 6

Enclosure 8