ABSTRACT:

The repository provides Erosion and Sediment Supply Potential (ESSP) profiles for 111 urban watersheds across the United States, along with R code. The ESSP framework integrates soil texture, impervious surface cover, and geomorphons derived from digital elevation models (DEMs) to estimate spatial variability in sediment supply potential along urban stream corridors.

The methodology is described in the manuscript 'Suspended sediment supply and transport regimes in urban watersheds across the United States.

ABSTRACT:

The dataset contains timeseries of turbidity, suspended sediment concentration, water level and discharge data collected from Potash Brook (16.4 Km²), an urban watershed in South Burlington, Vermont to investigate the influence of urbanization on suspended sediment transport dynamics. Turbidity data were collected from June 2024 to July 2025 at a frequency of 10 minutes using in-situ Cyclops-7 turbidimeter designed by Turner Designs and integrated with a Cyclops-7 logger by Precision Measurement Engineering, Inc. Turbidity was then related to suspended sediment concentration (SSC) through a power regression built using 158 discrete samples. SSC was determined using a modified US EPA method 160.2, from 200 mL storm events samples collected with an automatic ISCO 6712C compact sampler. Water level data were collected using MX2001-S pressure transducer (Onset, HOBO). A stage-discharge rating curve was developed using six discharge measurements obtained with a FlowTracker2 handheld acoustic Doppler velocimeter (SonTek) and Marsh-McBirney flow meter. The data were collected at Station 6, the most downstream site on Potash Brook (44°26'47.9"N 73°12'13.3"W), and is part of a distributed sensor network.

ABSTRACT:

This dataset contains turbidity data and storm event characters of three urban watersheds in Cuyahoga County, Ohio. Turbidity data were collected at a frequency of 10 minutes using in-situ Cyclop-7 turbidimeters designed by Turner Designs and integrated with a Cyclops-7 logger by Precision Measurement Engineering, Inc. Data were collected for three years from September 2018 to 2021. Turbidity data is harmonized with instantaneous discharge data from USGS stream gages. Event characteristics contains runoff, precipitation and antecedent characteristics. The data support the findings of the study titled "Urbanization and Suspended Sediment Transport Dynamics: A Comparative Study of Watersheds with Varying Degree of Urbanization using Concentration-Discharge Hysteresis".