# Presentation: 256012

## U.S. Geological Survey Presentation to theNew YorkDrought Management Task ForceSeptember 3, 1999

**Data-Collection Network Funded in Cooperation **
**with other State, Federal, and local Agencies**

***Web Page:         ny.usgs.gov***

## Surface Water Conditions

**Surface Water Conditions**

**Gary Firda**
**New York District**
**Surface-Water Specialist**

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**93%**

**99%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**100%**

**99%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Near Real-Time data at     http://ny.usgs.gov

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**66%**

**95%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**72%**

**94%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**88%**

**95%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**100%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Near Real-Time data at     http://ny.usgs.gov

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**81%**

**100%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**95%**

**90%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

**EXPLANATION**

- DISCHARGE, IN CUBIC FEET PER SECOND

**87%**

**61%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Real-Time data at     http://ny.usgs.gov

## Monthly Streamflow at Selected Gaging StationsThrough August 1999

- DISCHARGE, IN CUBIC FEET PER SECOND

**99%**

- Maximum / Minimum thru WY98
- 25 / 75% Exceedance thru WY98
- Median thru WY98
- Current mean monthly discharge
- 95% Exceedance thru WY98

- Monthly Streamflow at Selected Gaging StationsThrough August 1999

## Streamflow Conditions for August 1999 

## Ground-Water Conditions

**Ground-Water Conditions**

**John Williams**
**New York District**
**Ground-Water Specialist**

## Federal-State observation well networkAugust

## A-636, Albany County

- WATER LEVEL, IN FEET
- BELOW LAND SURFACE

- Maximum/Minimum thru WY98
- 75/25 % Exceedance thru WY98
- 90 % Exceedance thru WY98
- 95 % Exceedance thru WY98
- Median thru WY98
- Current water levels

**EXPLANATION**

**91%**

## Cu-10, Chautauqua County

- WATER LEVEL, IN FEET
- BELOW LAND SURFACE

- Maximum/Minimum thru WY98
- 75/25 % Exceedance thru WY98
- 90 % Exceedance thru WY98
- 95 % Exceedance thru WY98
- Median thru WY98
- Current water levels

**EXPLANATION**

**82%**

## C-102, Cortland County

- WATER LEVEL, IN FEET
- BELOW LAND SURFACE

- Maximum/Minimum thru WY98
- 75/25 % Exceedance thru WY98
- 90 % Exceedance thru WY98
- 95 % Exceedance thru WY98
- Median thru WY98
- Current water levels

**EXPLANATION**

**100%**

## St-40, St. Lawrence County

- WATER LEVEL, IN FEET
- BELOW LAND SURFACE

- Maximum/Minimum thru WY98
- 75/25 % Exceedance thru WY98
- 90 % Exceedance thru WY98
- 95 % Exceedance thru WY98
- Median thru WY98
- Current water levels

**EXPLANATION**

**38%**

## S8833, Suffolk County

- WATER LEVEL, IN FEET
- BELOW LAND SURFACE

- Maximum/Minimum thru WY98
- 75/25 % Exceedance thru WY98
- 90 % Exceedance thru WY98
- 95 % Exceedance thru WY98
- Median thru WY98
- Current water levels

**EXPLANATION**

**83%**

## Federal-State observation well networkAugust

## Salt-Front Location in the Hudson River Sept. 2, 1999

**Salt-Front Location in the Hudson River Sept. 2, 1999**

**Salt Front = 100 mg/L Chloride**

## Daily Average SW Data Through September 2, 1999

- Daily Average SW Data Through September 2, 1999

- Estimated Daily Avg Flow
- for Hudson River @ Green Island,
_**IS EQUAL TO**_
*Mohawk @ Cohoes *_*plus*_
*Hudson @ Waterford*

**0**

**15,000**

**30,000**

**45,000**

**60,000**

**1995**

**1999**

- J    F  M  A  M  J   J   A  S  O  N  D

-   May         Jun         Jul          Aug        Sep

**0**

**15,000**

## Daily Average SW DataThrough September 2, 1999

- Daily Average SW DataThrough September 2, 1999

**0**

**200**

**400**

**600**

**800**

**1000**

**1200**

**1400**

**1600**

**1800**

**2000**

- J      F   M    A   M    J     J     A     S    O    N   D

- 1995

- 1999

- Specific Conductance, in S/cm

- Hudson River Below
- Poughkeepsie (RM 72.3)

**100 mg/L Chloride**

**250 mg/L Chloride**

## Near-Real-Time SW DataThrough September 3, 1999

## Daily Average SW DataThrough September 2, 1999

- Daily Average SW DataThrough September 2, 1999

- J      F   M    A   M    J     J     A     S    O    N   D

- 1995

- 1999

- Specific Conductance, in S/cm

- Hudson River at West
- Point (RM 51.6)

**0**

**2,000**

**4,000**

**6,000**

**8,000**

**10,000**

**12,000**

## Location of Salt Front in Hudson River Through September 2, 1999

- J      J

- Salt Front = 100 mg/L Chloride

## Effects from Dennis?