1 / 17

Beyond the MIF

Beyond the MIF. History of Drought Findings from MIF study Surprises Priority Goals Priority Investigations. 40. H. S. AZEN AND AWYER. Environmental Engineers & Scientists. Maximum. 30. Daily. Demand. Maximum Daily Demand. Low Daily. (mgd). 20. Mean Flow.

corina
Download Presentation

Beyond the MIF

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Beyond the MIF • History of Drought • Findings from MIF study • Surprises • Priority Goals • Priority Investigations

  2. 40 H S AZEN AND AWYER Environmental Engineers & Scientists Maximum 30 Daily Demand Maximum Daily Demand Low Daily (mgd) 20 Mean Flow of Record 10 0 2000 2025 2050 2075 Year Genesis of North Fork MIF

  3. It’s a low flow issue Designate Watch, Warning Emergency Flow Triggers and response plans

  4. An issue of balance Supply Demand Agricultural Electrical Power Industrial/Municipal Commercial Recreational Biological Hydrologic Cycle Groundwater Recharge Discharges (returns) Ecosystem target must be clearly stated

  5. Mount Jackson Gauge:

  6. 50 45 40 35 30 Mean Age 0 CPUE (no./hr) 25 20 2 R = 0.8220 15 10 5 0 0 2000 4000 6000 8000 10000 12000 Mean June Discharge (cfs) Population Response to Flow Scott Smith et al.

  7. Habitat Response to Flow July 1999

  8. Nutrient Enrichment Effect on Dissolved Oxygen and pH Daily Flux Discharge was 0.7 cfs

  9. Biological Response to Flow

  10. 25000 Mottled Sculpin Longnose Dace 20000 Riffle Guild WUA (sq. ft/1000 ft) 15000 10000 5000 0 0 100 200 300 400 500 600 700 Discharge (cfs) Habitat Response to Flow

  11. Intriguing Findings Nutrient effects Groundwater effects Chronic stressor effects

  12. Nitrate Trend over Time North Fork, Strasburg

  13. Priority Goals • Conserve a safe, clean, reliable water supply • Maintain water resources for healthy environment and strong economy • Restore healthy aquatic ecosystems • Support reasonable and diverse water-based recreation • Maintain flexibility for adaptation to climate change

  14. Priority Investigations • Surface and subsurface flow pathways from land to river • Fate and transport of anthropogenic compounds

  15. Nutrient enrichment + + Primary producers Hg POP Arsenic Heterotrophic production (bacteria) EDC - - + - - Invertebrate consumers + - + Fish numbers + + - Fish Health parasites - time - - Minimum Oxygen chronic Spleen, Kidney, Liver, Skin, gills Organ dysfunction, disease Maximum pH - - + Unionized ammonia Death Fate and Transport

  16. Waste Source Tracking and Flow Paths Example application Broilers / Broiler Breeders / Turkeys / Turkey Breeders

  17. Priority Investigations 3. Health metrics for ecosystems, fish, wildlife, and humans 4. Alternative restoration approaches to restore impaired waters and re-establish riparian forests

More Related