Research and Management
Tools and Information

Hydrologic Models
Soil Moisture Distribution and Routing model (SMR, SMDR)
STOPMODEL
Curve-Number modeling (revisited)
SWAT: Including Variable Source Areas (VSAs)
VSLF: GWLF+VSA models

A Simple Illustration of a Conceptual Soil Erosion Model: A simple analytical solution is developed and experimentally tested for rain-impact induced erosion and sediment transport based on a recently proposed mechanistic model (Hairsine and Rose, 1991, Rose et al., 1994, Lisle et al., 1998). The model was originally derived for hillslope erosion and is reduced in this study to describe erosion from a horizontal soil surface under constant shallow overland flow (approximately 5 mm).

Surface Pollutant Release during Rainfall-Runoff: A mechanistic, physically based model for pollutant release from a surface source, such as field-spread manure (laboratory and field-tested).

Water Budget Model for Septic Disposal Field Design: A water budget model was developed to evaluate septic systems performance in sloping hardpan soils such as occurring in the northeast US. The model simulates water movement, moisture content and water table height in three fields consisting of the septic effluent disposal field and the up-slope and down-slope fields. Ultimately, it assesses the probability of failure for a set of hydrologic data, septic loading rates, and soil and landscape parameters that are readily available.

Water Resource Tools
Hydrologically Sensitive Areas (HSA) Locator for New York State (demo)

Water Resources Information
Variable Source Area hydrology
Preferential flow
Erosion and chemical transport
Colloid and micro-organism transport
Urban Hydrology
Pesticides
Slude and Metals
Phosphorous
Nitrogen