Weeki Wachee River System Recommended Minimum Flows and ...

More documents

Recommendations

Info

the model in terms of tides, salinity and most important, the temperature primarily by maintaining the centerline profile which controls the estuarine circulation and therefore the salinity and winter, cold-water intrusion into the system. The water surface elevation response in the upstream portion of the river does not show full damping of the tidal signal, but experiences a significant diminution (greater than 50% decrease) and increased mean elevation in the upstream direction. The resulting calibration is not perfect, as noted, but adequately represents the magnitudes and trends of the circulation in the system and allows for accurate temperature prediction as both the graphical (Figures 4-14a,b) and statistical representations show (Table 4-1). It can be seen that the differences in the 5 th , 50 th and 95 th percentiles for temperature are primarily about 0.25 o C and all less than 0.58 o C. Errata and Editorial Comments Page 5 Paragraph 2 Discussion revised and figures removed. Page 6 Paragraph 2 The preferred citation added to the final report. Page 6 Paragraph 3 Discussion revised and figures removed. Page 9 The District intended that the MFL developed for the Weeki Wachee Spring and River be applied to the Weeki Wachee spring complex. Text has been added to clarify this point. Page 12 Paragraph 5 Comment noted. The physical descriptions, primarily Chapter 2, have been supplemented with English units. Page 14 Some additional discussion of the geology has been added to the body of the report, but with all respect due to the panel, staff has chosen not to incorporate all the details suggested. Staff acknowledge that the suggested information may be of significant technical interest, but its inclusion will not contribute to the quantification of habitat/resource to changes flows due to withdrawals. Page 14 Paragraph 1 Line 10 comment noted and text revised. Page 21 Paragraph 1 Suggested edits have been incorporated. Page 22 Point of clarification. While the USGS periodically updates their discharge regression, (D. Yobbi, personal communication) the regressions presented in Figure 2-7 were developed by the District and not USGS. Page 26 The regression line presented is an unbiased representation of the decline in spring flow since 1960. Ensuing text identifies it as the result of both changes in climate and anthropogenic impacts. Additional text has been added to indicate the relationship to AMO periods and to emphasize that regionally flows peaked in the 1960s. Page 26 Paragraph 1 Line 13. Figure 2-13 has been replaced with a depiction of pumpage within the Weeki Wachee springshed. Page 27 Paragraph 1 "and" removed. D:\Weeki_Wachee\Peer_Report\Response\Peer_Report_Response.doc Page 8 / 13
Page 30-31 Page 32 Paragraph 2 Page 35 Paragraph 2 Page 36 Paragraph 2 Page 59 Paragraph 4 Page 71 Paragraph 1 A justification that Sharpes Ferry Well is unimpacted is included as Attachment 3. Acronyms have been defined and citations added. After the effects of rainfall have been removed, discharge can be expressed as a linear (albeit weakly so) function of pumpage (see text response). Short of modeling the time-series of pumpage, applying the impacts in a linear fashion appears to be a reasonable approach. It should be noted that the impact, expressed as a percentage of observed flow, would not be linear. That is to say, if a 10 cfs impact is imposed on an observed flow of 120 cfs, the percentage impact will be different than if the same 10 cfs impact were applied to a dry year with flows of only 100 cfs. Thus, the anthropogenic impact was applied on top of year-to-year variations due primarily to rainfall. Since the 17 cfs correction was applied in a linear fashion, both the median and the mean for the baseline period are the same. A note to this effect has been added to the report. Corrected Comments noted. The advantage of the Cox equations (as modified by Brown) and reported by Jaeger is that the seawater dilutions were prepared using river water in lieu of distilled water. Nevertheless, the comment is noted and the District will reevaluate the various options for calculating an apparent "salinity" from conductivity readings. Legend corrected. D:\Weeki_Wachee\Peer_Report\Response\Peer_Report_Response.doc Page 9 / 13
Page 1:
Weeki Wachee River System Recommend
Page 4 and 5:
Conversion Table Metric to U.S. Cus
Page 6 and 7:
5.2 FISH ..........................
Page 8 and 9:
Figure 3-2 Location of Bathymetric
Page 10 and 11:
LIST OF TABLES Table 1-1 Rule-of-Th
Page 12 and 13:
Table 8-1 Summary of Weeki Wachee M
Page 14 and 15:
Executive Summary Minimum Flows and
Page 16 and 17:
CHAPTER 1 - PURPOSE & BACKGROUND OF
Page 18 and 19:
1) flood flows that determine the b
Page 20 and 21:
the area." What constitutes "signif
Page 22 and 23:
Table 1-1 Rule-of-Thumb Estimates f
Page 24 and 25:
this report identifies specific res
Page 26 and 27:
1.6 Content of Remaining Chapters I
Page 28 and 29:
CHAPTER 2 - WATERSHED CHARACTERISTI
Page 30 and 31:
# # # circular vent 1.8 meters in d
Page 32 and 33:
Figure 2-5 1970s Aerial with 1999 U
Page 34 and 35:
is a variation of the Seminole word
Page 36 and 37:
Figure 2-6 Hurricane Tracks near Ba
Page 38 and 39:
varied by period. The variation was
Page 40 and 41:
2.3.2 Baseline Period Figure 2-10 i
Page 42 and 43:
found (ktau p=0.06) between total g
Page 44 and 45:
similarly across the springsheds ex
Page 46 and 47:
Figure 2-15 Wavelet Filtered Discha
Page 48 and 49:
Figure 2-16 INTB Groundwater Model
Page 50 and 51:
2.6 Seasonal Blocks As described in
Page 52 and 53:
Table 2-6 Median (cfs) Flow by Bloc
Page 54 and 55:
# # # Surface waters in this stretc
Page 56 and 57:
3.1.3 Segmentation Segmentation was
Page 58 and 59:
Figure 3-5 Dominant SAV and Median
Page 60 and 61:
Figure 3-6 Sediment Characteristics
Page 62 and 63:
Figure 3-7 Shoreline / Buffer Veget
Page 64 and 65:
CHAPTER 4 - TIDE, SALINITY & WATER
Page 66 and 67:
Two additional harmonic pairs were
Page 68 and 69:
Figure 4-5. Median Bottom Salinity
Page 70 and 71:
Figure 4-7 Salinity Range (1984-200
Page 72 and 73:
uncovering in response to strong wi
Page 74 and 75:
E) Salinity = β o + β 1 *Flow 2 +
Page 76 and 77:
Additional exploratory attempts usi
Page 78 and 79:
86 = 186 cfs, SWFWMD 1994-96 = 167
Page 80 and 81:
A regression of the form below was
Page 82 and 83:
Table 4-8 Median Water Quality of W
Page 84 and 85:
Figure 4-10 Nitrate Concentration a
Page 86 and 87:
CHAPTER 5 - BIOLOGICAL CHARACTERIST
Page 88 and 89:
Figure 5-1 Principal Component Anal
Page 90 and 91:
measured volume sampled which was t
Page 92 and 93:
5.2.2 Relation to inflow Response t
Page 94 and 95:
Table 5-7 Location Response (km u )
Page 96 and 97:
Table 5-9 Abundance Response to Inf
Page 98 and 99:
animals can survive chronic exposur
Page 100 and 101:
Figure 5-3 Number of Aerial Manatee
Page 102 and 103:
Figure 5-5(a) Molluscan Presence /
Page 104 and 105:
Table 5-11 Rank Order of Mollusc Ab
Page 106 and 107:
Figure 5-5 Polymesoda caroliniana A
Page 108 and 109:
Figure 6-1 Plankton Tow Flows Compa
Page 110 and 111:
In application, a baseline area and
Page 112 and 113:
6.1.4 Benthos Protection for benthi
Page 114 and 115:
Figure 6-3. Location of the Three P
Page 116 and 117:
7.2 Manatee Approach Establishing a
Page 118 and 119:
Figure 7-2 Joint Probability of Occ
Page 120 and 121:
Figure 7-3 Maximum Day Manatee Usag
Page 122 and 123:
Figure 7- 6 Example Calculations fo
Page 124 and 125:
Figure 7- 7 Estimation of Flow Redu
Page 126 and 127:
Figure 7-8. Summary Results for the
Page 128 and 129:
The reductions in flow that meet th
Page 130 and 131:
probably accounts in part for the d
Page 132 and 133:
Postel, S. and B.Richter. 2003. Riv
Page 134 and 135:
Stanford, J.A., J.V.Ward, W.J. Liss
Page 136 and 137:
Culter, J.K. 1986. Water Chemistry.
Page 138 and 139:
CHAPTER 10 - APPENDICES 10.1 Append
Page 140 and 141:
The wavelet used is the symmlets wa
Page 142 and 143:
explains, the energy plot shows the
Page 144 and 145:
0 if no significant withdrawal Z =
Page 146 and 147:
One advantage of using this regress
Page 148 and 149:
Technical Memorandum January 22, 20
Page 150 and 151:
Lecanto 1 & 2 #S Well Site Descript
Page 152 and 153:
Figure 4. HSPF subbasins in the INT
Page 154 and 155:
Most of the limestone mines located
Page 156 and 157:
3.1.3 Septic Tank Recharge in the S
Page 158 and 159:
Figure 10. Groundwater grid in the
Page 160 and 161:
Basso, R.J., 2004, Hydrogeologic Se
Page 162 and 163:
10.2 Appendices - Chapter 3 Appendi
Page 164 and 165:
10.3 Appendices - Chapter 4 Appendi
Page 166 and 167:
Appendix 4-2 Data Sources Water qua
Page 168 and 169:
Appendix 4-3 Water Quality Trend Gr
Page 170 and 171:
Water Quality Trend Graphics, conti
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181: United States Department of the Int
Page 182 and 183: October 8,2008 Florida Fish and Wil
Page 184 and 185: Martin Kelly, Ph.D. Page 3 October
Page 186 and 187: Scientific Peer Review of the Propo
Page 188 and 189: Determining a low flow need during
Page 190 and 191: Current state water policy, as expr
Page 192 and 193: Spring, Twin Dees Spring and possib
Page 194 and 195: under varying flow regimes. The fir
Page 196 and 197: Weeki Wachee Rainfall, Springflow a
Page 198 and 199: 6.0 Discharge:Precipitation (cfs/in
Page 200 and 201: Nevertheless, a major concern with
Page 202 and 203: system grid is not totally orthogon
Page 204 and 205: In a hydrodynamic model study, one
Page 206 and 207: analysis was rather cursory. The Di
Page 208 and 209: (taxa) richness in the WWRS. If the
Page 210 and 211: Freshwater Habitats Approximately 1
Page 212 and 213: ERRATA and EDITORIAL COMMENTS Page
Page 214 and 215: Page Paragraph Line Comment 14 Some
Page 216 and 217: Page Paragraph Line Comment 21 The
Page 218 and 219: Page Paragraph Line Comment 26 The
Page 220 and 221: REFERENCES Alber, M. 2002. A Concep
Page 222 and 223: Richter, B. D., J. V. Baumgartner,
Page 224 and 225: the regression equation used to pre
Page 226 and 227: and the three independent approache
Page 228 and 229: The Southwest Florida Water Managem
Page 232 and 233: Attachment 1 - Comparison of salini
Page 234 and 235: Figure 1. Predicted drawdown (feet)
show all

Weeki Wachee River System Recommended Minimum Flows and ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?