Water Resources

Volume 2 of the Sacramento City/County Drainage Manual can be downloaded here in PDF format. The Manual consists of 14 Chapters, the SDP and SACPRE programs, and a set of soil maps for the Sacramento County area. In order to make for easier download, the manual has been divided into parts.

The bulk of the manual (which includes all 14 chapters (without chapter 2 figures), as well as additional files and instructions for SACPRE and SDP) can be downloaded in a single 3.1Mb zip file. Or, download individual chapters, figures, and related programs from the listings below. A single file containing all Chapter 2 figures can be downloaded in either English units (3.8Mb) or SI units (3.7Mb). Soil type maps for Sacramento County are also available.

Download SacCalc Here

The Sacramento County Hydrologic Calculator (SacCalc) calculates design flows using Sacramento County Hydrology standards. SacCalc replaces the older DOS-based SACPRE program that prepared input files for the US Army Corps of Engineers HEC-1 program. SacCalc is a Microsoft Windows application that provides a graphical user interface for watershed layout and design storm selection. SacCalc can also provide Nolte flows used for storm drain design in Sacramento County.

Download individual chapters:

• Introduction & Table of Contents 54k

PART 1: Methods and Design Charts

• Chapter 1 - Overview 30k
• Chapter 2 - Design Charts 61k
  NOTE: The Sato method in Volume 2 is no longer used to size stormwater quality control measures. For more information on selecting and sizing stormwater quality control measure refer to:
  Stormwater Quality Design Manual for the Sacramento and South Placer Regions

PART 2: The Sacramento Method

• Chapter 3 - Introduction to the Sacramento Method 105k
• Chapter 4 - Precipitation 362k
• Chapter 5 - Precipitation Losses 445k
• Chapter 6 - Runoff Hydrographs77k
• Chapter 7 - Basin Lag 355k
• Chapter 8 - Hydrograph Routing 584k
• Chapter 9 - HEC-1 Model Development 44k
• Chapter 10 - Sacramento Method Examples 529k

PART 3: Using SACPRE HEC-1 Preprocessor

• Chapter 11 - SACPRE Main Menu 172k
• Chapter 12 - Hydrograph Options 438k
• Chapter 13 - Editing Intermediate Files 60k
• Chapter 14 - Installation and Batch Operation of SACPRE(27k)

Additional Related Information from the Manual's Floppy Disk:

• Additional tables for chapters 4, 5, 6, and 7 123k
• Miscellaneous information including assumptions used to develop curves and the instructions for using the SACPRE and SDP programs (53k)

Individual Figures for Chapter 2:

List of Figures for Chapter 2

• 2-1 County of Sacramento Design Runoff Criteria, All Development 171k
• 2-2 City of Sacramento Design Runoff Criteria, Infill Development 152k
• 2-3 City of Sacramento Design Runoff Criteria, New Development 47k
• 2-4 Sacramento City and County Hydrologic Zones, Nolte Method 69k
• 2-5 Design Runoff, Nolte Method, Drainage Areas <50 Acres 165k
• 2-6 Design Runoff, Nolte Method, Residential Areas, 50-160 Acres 156k
• 2-7 Design Runoff, Nolte Method, Commercial Areas, 50-160 Acres 150k
• 2-8 Design Runoff, Nolte Method, Hydrologic Zone 1, 160-640 Acres 114k
• 2-9 Design Runoff, Nolte Method, Hydrologic Zone 2, 160-640 Acres 113k
• 2-10 Design Runoff, Nolte Method, Hydrologic Zone 3, 160-640 Acres 208k
• 2-11 Rainfall Zones, Sacramento Method 2-23 Sacramento City and County 67k
• 2-12 10-Year Peak Flow, Sacramento Method, Rainfall Zone 1, <80 Acres 209k
• 2-13 10-Year Peak Flow, Sacramento Method, Rainfall Zone 1, 80-640 Acres 224k
• 2-14 10-Year Peak Flow, Sacramento Method, Rainfall Zone 2, <80 Acres 210k
• 2-15 10-Year Peak Flow, Sacramento Method, Rainfall Zone 2, 80-640 Acres 232k
• 2-16 10-Year Peak Flow, Sacramento Method, Rainfall Zone 3, <80 Acres 221k
• 2-17 10-Year Peak Flow, Sacramento Method, Rainfall Zone 3, 80-640 Acres 219k
• 2-18 100-Year Peak Flow, Sacramento Method, Rainfall Zone 1, <80 Acres 215k
• 2-19 100-Year Peak Flow, Sacramento Method, Rainfall Zone 1, 80-640 Acres 224k
• 2-20 100-Year Peak Flow, Sacramento Method, Rainfall Zone 2, <80 Acres 111k
• 2-21 100-Year Peak Flow, Sacramento Method, Rainfall Zone 2, 80-640 Acres 117k
• 2-22 100-Year Peak Flow, Sacramento Method, Rainfall Zone 3, <80 Acres 125k
• 2-23 100-Year Peak Flow, Sacramento Method, Rainfall Zone 3, 80-640 Acres 119k
• 2-24 Peak Runoff Based on Lag Time, Sacramento Method, 0-640 Acres 113k
• 2-25 Sato Design Curve for Sizing of Water Quality Dry-Extended Detention Basins 129k
  NOTE: The Sato method is no longer used to size stormwater quality control measures. For more information on selecting and sizing stormwater quality control measure refer to:
  Stormwater Quality Design Manual for the Sacramento and South Placer Regions

List of Figures for Chapter 2 (SI Units)

• 2-5si Design Runoff, Nolte Method, Drainage Areas <20 Hectares 144k
• 2-6si Design Runoff, Nolte Method, Residential Areas, 20-65 Hectares 147k
• 2-7si Design Runoff, Nolte Method, Commercial Areas, 20-65 Hectares 136k
• 2-8si Design Runoff, Nolte Method, Hydrologic Zone 1, 65-260 Hectares 107k
• 2-9si Design Runoff, Nolte Method, Hydrologic Zone 2, 65-260 Hectares 108k
• 2-10si Design Runoff, Nolte Method, Hydrologic Zone 3, 65-260 Hectares 197k
• 2-12si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 1, <30 Hectares 183k
• 2-13si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 1, 30-260 Hectares 223k
• 2-14si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 2, <30 Hectares 181k
• 2-15si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 2, 30-260 Hectares 226k
• 2-16si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 3, <30 Hectares 190k
• 2-17si 10-Year Peak Flow, Sacramento Method, Rainfall Zone 3, 30-260 Hectares 229k
• 2-18si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 1, <30 Hectares 187k
• 2-19si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 1, 30-260 Hectares 229k
• 2-20si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 2, <30 Hectares 106k
• 2-21si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 2, 30-260 Hectares 128k
• 2-22si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 3, <30 Hectares 107k
• 2-23si 100-Year Peak Flow, Sacramento Method, Rainfall Zone 3, 30-260 Hectares 124k
• 2-24si Peak Runoff Based on Lag Time, Sacramento Method, 0-160 Hectares 110k
• 2-25si Sato Design Curve for Sizing of Water Quality Dry-Extended Detention Basins 141k