Wireless Technologies and Embedded Networked Sensing:

Application to Integrated Urban Water Quality Management

November 15, 2006

Miki Hondzo, Sung-Chul Kim, Paige Novak, William Arnold, Ray Hozalski, Nihar Jindal, Shashi Shekhar

University of MinnesotaDepartment of Civil Engineering

Department of Electrical and Computer Engineering

National Center for Earth-surface Dynamics

CLEANER CUASHI

Ecological Degradation of Streams

• Sustainable improvement of stream ecological conditions requires integration of hydrological, chemical, biological, and geomorphological processes across a range of scales (from watershed to in-stream biogeochemical processes)

• How do we integrate microbiological, chemical & hydrologic/transport processes?

– Nonlinear relations: Fluid flow-microbial-chemical variables

– Linear processes with non-linear drivers (heterogeneities in physical, chemical, and biological processes)

• We propose a wireless network with embedded networked sensing – multi-scale, – spatially-dense, – real-time, and – event driven observations

Test Bed: Minnehaha Creek, MN

HypothesisWater quality in urban streams is controlled bythe mean and variance of stormwater residence time

NOM

Pathogens

Syntheticorganicchemicals

Inorganic chemicals

Spatial and Temporal Distributions of Nitrate Concentrations at Eel River, CA

(O’Connor et al., 2007, JGR)

Nitrate biosensor

Hydraulically Mediated Bacterial Ecology