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Kansas Spring River Metal TMDLs Thomas Stiles, KDHE Watershed Planning April 14, 2005.

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Presentation on theme: "Kansas Spring River Metal TMDLs Thomas Stiles, KDHE Watershed Planning April 14, 2005."— Presentation transcript:

1 Kansas Spring River Metal TMDLs Thomas Stiles, KDHE Watershed Planning April 14, 2005

2 303(d) Listings 1998 – Lower Spring River, Turkey Crk, Short Crk, Brush Crk, Little Shawnee Crk – Pb, Zn, Cd, Cu 1998 – Biological Impairment on Spring River 2002 – Shoal Crk – Pb & Zn - Shawnee Crk – Cu, Pb & Zn

3

4 Current Metal WQS

5 Hydrology is Major Factor

6 Hydrology and Loadings

7 Hydrology and Hardness

8 Aquatic Life Impairment

9 Higher Flows, Higher Exceedances

10 High Flows Impact Clean Sites

11 High Flows ~ Impact of Sediments

12 Some Sites Degraded at All Flows

13 TMDL Allocations WLA: Pt Sources – Initially Zero LA: Variable by Location & Flow Condition MOS: Statistical Characteristics of Metals and Hardness

14 Variable Load Reductions

15 Highest Priority Issues Short Creek: Zn, normal to high Q Turkey Creek: Zn, normal to high Q Center Creek: Zn, normal to high Q; normal Q Shawnee Creek: normal Q Shoal Creek: very high Q Baxter Springs: normal to high Q; high to very high Q

16 Load Reduction Strategy 1. Tributary Reductions for Self & Baxter Springs 2. Reductions on Other Tribs – e.g.; Willow Creek 3. Removal of In-Channel Sediments 4. Potential Dredging of Empire Lake

17 TMDL Timeline Next Week: Submission to EPA : Ongoing Remedial Actions 2008: Reopen TMDL – NRDA data; effluent monitoring; establish WLAs 2009: Begin targeted sediment removal 2013: Revisit TMDL; note progress


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