CONTENTS

 

Abstract

Introduction

Objectives and approach

Purpose and scope

Previous studies

Geology

Surficial geologic units

Till

Ground moraine

Colluvium

Ice-contact stratified drift

Outwash and Alluvium

Bedrock

Stratigraphy

Ground water

Ground-water flow system

Hydrology

Precipitation, runoff, and evapotranspiration

Sources of stream base flow

Subbasin runoff

Summary

Selected references

 

FIGURES

 

1. Map showing location and major geographic features of the Beaver Kill basin, in southeastern New York

2. Map showing areal distribution of major surficial geologic units and location of geologic sections within the Beaver Kill basin

3. Geologic section A-A' across Willowemoc Creek, at Roundtop, Sullivan County

4. Geologic section B-B' across the Beaver Kill valley at Craigie Claire, Sullivan County

5. Geologic section C-C' across the Beaver Kill valley at Jersey Brook, Sullivan County

6. Geologic section D-D' along the East Branch Delaware aqueduct crossing of the Beaver Kill valley at Lewbeach, Sullivan County

7. Geologic section E-E' along the East Branch Delaware aqueduct crossing of Willowemoc Creek, Sullivan County

8. Diagram showing conceptual ground-water flow within the Beaver Kill basin

9. Map showing lines of equal of precipitation and runoff, and zones of evapotranspiration within the Beaver Kill basin

10. Graph showing relations between summer runoff from natural storage and average annual precipitation for 23 Catskill Mountain streams

 

TABLES

 

1. Comparison of hydrogeologic characteristics of 13 Delaware River drainage basins within the Catskill Mountains, New York