SITES SOFTWARE APPLICATION SITES SOFTWARE APPLICATION SEMINARSEMINAR

INTRODUCTION to SITESINTRODUCTION to SITES

____________________________________________________SITES 2005SITES 2005

INTEGRATED DEVELOPMENT ENVIRONMENTINTEGRATED DEVELOPMENT ENVIRONMENTfor

WATER RESOURCE SITE ANALYSIS

HISTORYHISTORY

• Program Developed Over Time by NRCS

• Spillway Erosion Technology Developed Jointly by ARS and NRCS

• Interface, IDE continuing to be developed to provide a user-friendly environment

DAMS CONSTRUCTED NATIONWIDE

0

100

200

300

400

500

600

7001948

1950

1952

1954

1956

1958

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

YEAR DAMS WAS CONSTRUCTED

NUM

BER

OF

DAM

S CO

NSTR

UCTE

D

RC&D

PL-534

PILOT

PL-566

25 years

DAM CLASSIFICATION DAM CLASSIFICATION NRCS Dams Inventory

Designed Current %change

-100

102030405060708090

Designed Current %change

a b c

CLASSCLASSaa aa

cc%%

SITES ? ? ?SITES ? ? ?•Watershed Rainfall-Runoff

• Streamflow routing

• Reservoir Routing Principal spillway rating Auxiliary spillway rating NRCS dam design features

• Earth Spillway Analysis

HISTORYHISTORY

• Program Developed Over Time by NRCS

• Spillway Erosion Technology Developed Jointly by ARS and NRCS

• Interface, IDE continuing to be developed to provide a user-friendly environment

ERODED SPILLWAYERODED SPILLWAY

LABORATORY SPILLWAY MODELLABORATORY SPILLWAY MODEL

SPILLWAY EROSION PHASESSPILLWAY EROSION PHASES

1. SURFACE EROSION 1. SURFACE EROSION (Cover Destruction)

2. CONCENTRATED FLOW EROSION2. CONCENTRATED FLOW EROSION

3. HEADCUT ADVANCE3. HEADCUT ADVANCE

HISTORYHISTORY

• Program Developed Over Time by NRCS

• Spillway Erosion Technology Developed Jointly by ARS and NRCS

• Interface, IDE, developed to provide a user-friendly operating environment

In January 2006the new

Version 2005was released